SSA-019200

Siemens Security Advisory by Siemens ProductCERT

SSA-019200: Multiple Vulnerabilities in SCALANCE W-700 IEEE 802.11n Devices Before V6.6.0

Publication Date:	2026-04-14
Last Update:	2026-04-14
Current Version:	V1.0
CVSS v3.1 Base Score:	9.1
CVSS v4.0 Base Score:	9.4

SUMMARY

SCALANCE W-700 IEEE 802.11n family before V6.6.0 are affected by multiple vulnerabilities.

Siemens has released a new version for SCALANCE W-700 IEEE 802.11n family and recommends to update to the latest version.

KNOWN AFFECTED PRODUCTS

Un-/Collapse All

Affected Product and Versions	Remediation
SCALANCE W-700 IEEE 802.11n family	Show more details
SCALANCE W721-1 RJ45 (6GK5721-1FC00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W721-1 RJ45 (6GK5721-1FC00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W722-1 RJ45 (6GK5722-1FC00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W722-1 RJ45 (6GK5722-1FC00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W722-1 RJ45 (6GK5722-1FC00-0AC0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W734-1 RJ45 (6GK5734-1FX00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W734-1 RJ45 (6GK5734-1FX00-0AA6) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W734-1 RJ45 (6GK5734-1FX00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W734-1 RJ45 (USA) (6GK5734-1FX00-0AB6) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W738-1 M12 (6GK5738-1GY00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W738-1 M12 (6GK5738-1GY00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W748-1 M12 (6GK5748-1GD00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W748-1 M12 (6GK5748-1GD00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W748-1 RJ45 (6GK5748-1FC00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W748-1 RJ45 (6GK5748-1FC00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W761-1 RJ45 (6GK5761-1FC00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W761-1 RJ45 (6GK5761-1FC00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W774-1 M12 EEC (6GK5774-1FY00-0TA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W774-1 M12 EEC (6GK5774-1FY00-0TB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W774-1 RJ45 (6GK5774-1FX00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W774-1 RJ45 (6GK5774-1FX00-0AA6) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W774-1 RJ45 (6GK5774-1FX00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W774-1 RJ45 (6GK5774-1FX00-0AC0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W774-1 RJ45 (USA) (6GK5774-1FX00-0AB6) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W778-1 M12 (6GK5778-1GY00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W778-1 M12 (6GK5778-1GY00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W778-1 M12 EEC (6GK5778-1GY00-0TA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W778-1 M12 EEC (USA) (6GK5778-1GY00-0TB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W786-1 RJ45 (6GK5786-1FC00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W786-1 RJ45 (6GK5786-1FC00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W786-2 RJ45 (6GK5786-2FC00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W786-2 RJ45 (6GK5786-2FC00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W786-2 RJ45 (6GK5786-2FC00-0AC0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W786-2 SFP (6GK5786-2FE00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W786-2 SFP (6GK5786-2FE00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W786-2IA RJ45 (6GK5786-2HC00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W786-2IA RJ45 (6GK5786-2HC00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-1 M12 (6GK5788-1GD00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-1 M12 (6GK5788-1GD00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-1 RJ45 (6GK5788-1FC00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-1 RJ45 (6GK5788-1FC00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-2 M12 (6GK5788-2GD00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-2 M12 (6GK5788-2GD00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-2 M12 EEC (6GK5788-2GD00-0TA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-2 M12 EEC (6GK5788-2GD00-0TB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-2 M12 EEC (6GK5788-2GD00-0TC0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-2 RJ45 (6GK5788-2FC00-0AA0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-2 RJ45 (6GK5788-2FC00-0AB0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations
SCALANCE W788-2 RJ45 (6GK5788-2FC00-0AC0) All versions < V6.6.0 affected by all CVEs CVE-2020-24588 CVE-2020-26139 CVE-2020-26140 CVE-2020-26141 CVE-2020-26143 CVE-2020-26144 CVE-2020-26146 CVE-2020-26147 CVE-2021-3712 CVE-2022-0778 CVE-2022-31765 CVE-2022-36323 CVE-2022-36324 CVE-2022-36325 CVE-2023-44373	Update to V6.6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109996102/ See further recommendations from section Mitigations

MITIGATIONS

Siemens has identified the following specific mitigations that customers can apply to reduce the risk:

CVE-2020-24588

As these vulnerabilities can only be exploited within Wi-Fi range, when possible reduce Wi-Fi transmission power or make sure to have the devices in private areas with physical access controls

Disable A-MSDU, if possible

CVE-2020-26139

As these vulnerabilities can only be exploited within Wi-Fi range, when possible reduce Wi-Fi transmission power or make sure to have the devices in private areas with physical access controls

CVE-2020-26140

As these vulnerabilities can only be exploited within Wi-Fi range, when possible reduce Wi-Fi transmission power or make sure to have the devices in private areas with physical access controls

CVE-2020-26141

As these vulnerabilities can only be exploited within Wi-Fi range, when possible reduce Wi-Fi transmission power or make sure to have the devices in private areas with physical access controls

CVE-2020-26143

As these vulnerabilities can only be exploited within Wi-Fi range, when possible reduce Wi-Fi transmission power or make sure to have the devices in private areas with physical access controls

CVE-2020-26144

As these vulnerabilities can only be exploited within Wi-Fi range, when possible reduce Wi-Fi transmission power or make sure to have the devices in private areas with physical access controls

CVE-2020-26146

As these vulnerabilities can only be exploited within Wi-Fi range, when possible reduce Wi-Fi transmission power or make sure to have the devices in private areas with physical access controls

CVE-2020-26147

As these vulnerabilities can only be exploited within Wi-Fi range, when possible reduce Wi-Fi transmission power or make sure to have the devices in private areas with physical access controls

Product-specific remediations or mitigations can be found in the section Known Affected Products.
Please follow the General Security Recommendations.

GENERAL SECURITY RECOMMENDATIONS

As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity

PRODUCT DESCRIPTION

SCALANCE W products are wireless communication devices used to connect industrial components, like Programmable Logic Controllers (PLCs) or Human Machine Interfaces (HMIs), according to the IEEE 802.11 standard (802.11ac, 802.11a/b/g/h, and/or 802.11n).

VULNERABILITY DESCRIPTION

Un-/Collapse All

This chapter describes all vulnerabilities (CVE-IDs) addressed in this security advisory. Wherever applicable, it also documents the product-specific impact of the individual vulnerabilities.

Vulnerability CVE-2020-24588

The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that the A-MSDU flag in the plaintext QoS header field is authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n), an adversary can abuse this to inject arbitrary network packets.

CVSS v3.1 Base Score	3.5
CVSS v3.1 Vector	CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
CWE	CWE-306: Missing Authentication for Critical Function

Vulnerability CVE-2020-26139

An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. This might be abused in projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier to exploit other vulnerabilities in connected clients.

CVSS v3.1 Base Score	5.3
CVSS v3.1 Vector	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE	CWE-287: Improper Authentication

Vulnerability CVE-2020-26140

An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The WEP, WPA, WPA2, and WPA3 implementations accept plaintext frames in a protected Wi-Fi network. An adversary can abuse this to inject arbitrary data frames independent of the network configuration.

CVSS v3.1 Base Score	6.5
CVSS v3.1 Vector	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE	CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Vulnerability CVE-2020-26141

An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The Wi-Fi implementation does not verify the Message Integrity Check (authenticity) of fragmented TKIP frames. An adversary can abuse this to inject and possibly decrypt packets in WPA or WPA2 networks that support the TKIP data-confidentiality protocol.

CVSS v3.1 Base Score	6.5
CVSS v3.1 Vector	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE	CWE-354: Improper Validation of Integrity Check Value

Vulnerability CVE-2020-26143

An issue was discovered in the ALFA Windows 10 driver 1030.36.604 for AWUS036ACH. The WEP, WPA, WPA2, and WPA3 implementations accept fragmented plaintext frames in a protected Wi-Fi network. An adversary can abuse this to inject arbitrary data frames independent of the network configuration.

CVSS v3.1 Base Score	6.5
CVSS v3.1 Vector	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE	CWE-20: Improper Input Validation

Vulnerability CVE-2020-26144

An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WEP, WPA, WPA2, and WPA3 implementations accept plaintext A-MSDU frames as long as the first 8 bytes correspond to a valid RFC1042 (i.e., LLC/SNAP) header for EAPOL. An adversary can abuse this to inject arbitrary network packets independent of the network configuration.

CVSS v3.1 Base Score	6.5
CVSS v3.1 Vector	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE	CWE-20: Improper Input Validation

Vulnerability CVE-2020-26146

An issue was discovered on Samsung Galaxy S3 i9305 4.4.4 devices. The WPA, WPA2, and WPA3 implementations reassemble fragments with non-consecutive packet numbers. An adversary can abuse this to exfiltrate selected fragments. This vulnerability is exploitable when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used. Note that WEP is vulnerable to this attack by design.

CVSS v3.1 Base Score	5.3
CVSS v3.1 Vector	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE	CWE-20: Improper Input Validation

Vulnerability CVE-2020-26147

An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used.

CVSS v3.1 Base Score	5.4
CVSS v3.1 Vector	CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N
CWE	CWE-20: Improper Input Validation

Vulnerability CVE-2021-3712

ASN.1 strings are represented internally within OpenSSL as an ASN1_STRING structure which contains a buffer holding the string data and a field holding the buffer length. This contrasts with normal C strings which are repesented as a buffer for the string data which is terminated with a NUL (0) byte. Although not a strict requirement, ASN.1 strings that are parsed using OpenSSL's own "d2i" functions (and other similar parsing functions) as well as any string whose value has been set with the ASN1_STRING_set() function will additionally NUL terminate the byte array in the ASN1_STRING structure. However, it is possible for applications to directly construct valid ASN1_STRING structures which do not NUL terminate the byte array by directly setting the "data" and "length" fields in the ASN1_STRING array. This can also happen by using the ASN1_STRING_set0() function. Numerous OpenSSL functions that print ASN.1 data have been found to assume that the ASN1_STRING byte array will be NUL terminated, even though this is not guaranteed for strings that have been directly constructed. Where an application requests an ASN.1 structure to be printed, and where that ASN.1 structure contains ASN1_STRINGs that have been directly constructed by the application without NUL terminating the "data" field, then a read buffer overrun can occur. The same thing can also occur during name constraints processing of certificates (for example if a certificate has been directly constructed by the application instead of loading it via the OpenSSL parsing functions, and the certificate contains non NUL terminated ASN1_STRING structures). It can also occur in the X509_get1_email(), X509_REQ_get1_email() and X509_get1_ocsp() functions. If a malicious actor can cause an application to directly construct an ASN1_STRING and then process it through one of the affected OpenSSL functions then this issue could be hit. This might result in a crash (causing a Denial of Service attack). It could also result in the disclosure of private memory contents (such as private keys, or sensitive plaintext). Fixed in OpenSSL 1.1.1l (Affected 1.1.1-1.1.1k). Fixed in OpenSSL 1.0.2za (Affected 1.0.2-1.0.2y).

CVSS v3.1 Base Score	7.4
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
CWE	CWE-125: Out-of-bounds Read

Vulnerability CVE-2022-0778

The BN_mod_sqrt() function in openSSL, which computes a modular square root, contains a bug that can cause it to loop forever for non-prime moduli. Internally this function is used when parsing certificates that contain elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. It is possible to trigger the infinite loop by crafting a certificate that has invalid explicit curve parameters. Since certificate parsing happens prior to verification of the certificate signature, any process that parses an externally supplied certificate may thus be subject to a denial of service attack. The infinite loop can also be reached when parsing crafted private keys as they can contain explicit elliptic curve parameters.

CVSS v3.1 Base Score	7.5
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0 Base Score	8.7
CVSS v4.0 Vector	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE	CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

Vulnerability CVE-2022-31765

Affected devices do not properly authorize the change password function of the web interface. This could allow low privileged users to escalate their privileges.

CVSS v3.1 Base Score	8.8
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
CWE	CWE-862: Missing Authorization

Vulnerability CVE-2022-36323

Affected devices do not properly sanitize an input field. This could allow an authenticated remote attacker with administrative privileges to inject code or spawn a system root shell.

CVSS v3.1 Base Score	9.1
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
CWE	CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Vulnerability CVE-2022-36324

Affected devices do not properly handle the renegotiation of SSL/TLS parameters. This could allow an unauthenticated remote attacker to bypass the TCP brute force prevention and lead to a denial of service condition for the duration of the attack.

CVSS v3.1 Base Score	7.5
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
CWE	CWE-770: Allocation of Resources Without Limits or Throttling

Vulnerability CVE-2022-36325

Affected devices do not properly sanitize data introduced by an user when rendering the web interface. This could allow an authenticated remote attacker with administrative privileges to inject code and lead to a DOM-based XSS.

CVSS v3.1 Base Score	6.8
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
CWE	CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Vulnerability CVE-2023-44373

Affected devices do not properly sanitize an input field. This could allow an authenticated remote attacker with administrative privileges to inject code or spawn a system root shell. Follow-up of CVE-2022-36323.

CVSS v3.1 Base Score	9.1
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
CVSS v4.0 Base Score	9.4
CVSS v4.0 Vector	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE	CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

ADDITIONAL INFORMATION

For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories

HISTORY DATA

V1.0 (2026-04-14):

Publication Date

The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.