Publication Date: |
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Last Update: |
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Current Version: | V2.6 |
CVSS v3.1 Base Score: | 7.5 |
Affected Product and Versions | Remediation |
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All versions < V7.0.3 |
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All versions < V7.0.3 |
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All versions < V7.0.3 |
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All versions < V7.0.3 |
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All versions |
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All versions |
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All versions < V4.6 Patch 01 |
Update to V4.6 Patch 01 or later version
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All versions < V1.2.0 |
Update to V1.2.0 or later version
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All versions |
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All versions |
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All versions |
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All versions |
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All versions |
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All versions |
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All versions |
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All versions |
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All versions |
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All versions |
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All versions |
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All versions |
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All versions |
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All versions |
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All versions |
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All versions < V4.3.0 |
Update to V4.3.0 or later version
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All versions < V4.4.0 |
Update to V4.4.0 or later version
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All versions |
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All versions |
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All versions |
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All versions |
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All versions < V1.2.1 |
Update to V1.2.1 or later version
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All versions < V4.2.2 |
Update to V4.2.2 or later version
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All versions < V4.0.1 |
Update to V4.0.1 or later version
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All versions |
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All versions < V4.2.2 |
Update to V4.2.2 or later version
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All versions < V4.2.1 |
Update to V4.2.1 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V2.0 |
Update to V2.0 or later version
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All versions |
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All versions |
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All versions |
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All versions < V4.2.1 |
Update to V4.2.1 or later version
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All versions < V2.1 |
Update to V2.1 or later version
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All versions < V3.3.17 |
Update to V3.3.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V7.0.3 |
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All versions < V6.0.9 |
Update to V6.0.9 or later version
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All versions |
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All versions < V8.2.2 |
Update to V8.2.2 or later version
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All versions < V4.4.0 |
Update to V4.4.0 or later version
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All versions < V2.0 |
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All versions < V2.0 |
Update to V2.0 or later version
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All versions < V1.1.8 |
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All versions < V1.1.1 |
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All versions < V2010 SP3 |
Update to V2010 SP3 or later version and apply BIOS and Microsoft Windows updates
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All versions < V2010 SP3 |
Update to V2010 SP3 or later version and apply BIOS and Microsoft Windows updates
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All versions < V1.5 HF1 |
Update to V1.5 HF1 or later version
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All versions < V1.3 |
Update to V1.3 or later version
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All versions < V4.7 SP10 HF5 |
Update to V4.7 SP10 HF5 or later version
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All versions < V4.7 SP10 HF5 |
Update to V4.7 SP10 HF5 or later version
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All versions < 4.8 |
Upgrade to V5.2 HF1
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All versions < 4.8 |
Upgrade to V5.2 HF1
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All versions |
Upgrade to V4.8 SP2 HF9
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All versions |
Upgrade to V4.8 SP2 HF9
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All versions |
Upgrade to V4.8 SP2 HF9
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All versions |
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All versions |
Upgrade to V5.2 HF4
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All versions < 4.8 |
Upgrade to V5.2 HF1
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All versions < V4.7 HF33 |
Update to V4.7 HF33 or later version
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All versions |
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All versions < V4.8 SP5 |
Update to V4.8 SP5 or later version
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All versions < V4.8 SP6 |
Update to V4.8 SP6 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V4.2.1 |
Update to V4.2.1 or later version
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All versions < V3.3.17 |
Update to V3.3.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V3.2.17 |
Update to V3.2.17 or later version
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All versions < V7.0.3 |
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All versions < V7.0.3 |
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Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk:
Product-specific remediations or mitigations can be found in the section
Affected Products and Solution.
Please follow the 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
The vulnerability classification has been performed by using the CVSS scoring system in version 3.1 (CVSS v3.1) (https://www.first.org/cvss/). The CVSS environmental score is specific to the customer’s environment and will impact the overall CVSS score. The environmental score should therefore be individually defined by the customer to accomplish final scoring.
An additional classification has been performed using the CWE classification, a community-developed list of common software security weaknesses. This serves as a common language and as a baseline for weakness identification, mitigation, and prevention efforts. A detailed list of CWE classes can be found at: https://cwe.mitre.org/.
Affected devices improperly handle large amounts of specially crafted UDP packets.
This could allow an unauthenticated remote attacker to trigger a denial of service condition.
CVSS v3.1 Base Score | 7.5 |
CVSS 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-400: Uncontrolled Resource Consumption |
V1.0 (2019-10-08): | Publication Date |
V1.1 (2019-11-12): | Added solution for SINAMICS S120 V4.7, SINAMICS S150, SINAMICS G130 V4.7, SINAMICS G150 and SINAMICS SL150 V4.7 |
V1.2 (2020-01-14): | Added solution for SIMATIC S7-1200 and S7-1500 Software and Open Controller. SIPLUS devices now explicitly mentioned in the list of affected products |
V1.3 (2020-02-11): | Added solution for SINAMICS DCP |
V1.4 (2020-03-10): | Added solution for SIMATIC S7-300 CPU family |
V1.5 (2020-04-14): | Added solution for SIMATIC ET200MP IM155-5 PN HF |
V1.6 (2020-07-14): | Added SIMATIC TDC CP51M1 and CPU555 to the list of affected products |
V1.7 (2020-08-11): | Added solution for SIMATIC PN/PN Coupler. Added SIMATIC ET200ecoPN product variants (MLFB IDs) that are not affected |
V1.8 (2020-09-08): | Added solution for EK-ERTEC 200P and S7-410 V8 |
V1.9 (2021-01-12): | Added solution for SIMATIC ET200SP IM155-6 PN HA and added ecoPN model (6ES7148-6JG00-0BB0) as not affected |
V2.0 (2021-06-08): | Added solution for SIMATIC ET200SP IM155-6 PN HS |
V2.1 (2021-10-12): | Clarified affected ET200ecoPN models |
V2.2 (2022-02-08): | Clarified that no remediation is planned for ET200 devices |
V2.3 (2022-08-09): | No fix planned for SIMATIC S7-400 PN/DP V6 and below CPU family |
V2.4 (2022-12-13): | Added fix for SINUMERK 840D sl; no fix planned for PROFINET development/evaluation kits - DK Standard Ethernet Controller and EK-ERTEC 200; SIMATIC S7-300 CPU family expanded with product specific designations, patch links and MLFBs |
V2.5 (2023-01-10): | No fix planned for remaining products |
V2.6 (2023-05-09): | Expanded SIMATIC S7-400 V7 CPU family (incl. SIPLUS variants) to individual products and MLFBs; added fix for SIMATIC S7-400 PN/DP V7 CPUs; clarified that other S7-400 V7 CPUs are not affected |