SSA-047424

Siemens Security Advisory by Siemens ProductCERT

SSA-047424: Code Execution and SQL Injection Vulnerabilities in OZW Web Servers

Publication Date:	2025-05-13
Last Update:	2025-05-13
Current Version:	V1.0
CVSS v3.1 Base Score:	10.0
CVSS v4.0 Base Score:	10.0

SUMMARY

OZW672 and OZW772 Web Server versions contain vulnerabilities that could allow an attacker to execute arbitrary code on the device with root privileges (in versions before V8.0) or to authenticate as Administrator user (in versions before V6.0).

Siemens has released new versions for the affected products and recommends to update to the latest versions.

AFFECTED PRODUCTS AND SOLUTION

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Affected Product and Versions	Remediation
OZW672	Show more details https://support.industry.siemens.com/cs/ww/en/view/62567396/
OZW672 All versions < V8.0 affected by CVE-2025-26389	Update to V8.0 or later version https://support.industry.siemens.com/cs/ww/en/view/62567396/
OZW672 All versions < V6.0 affected by CVE-2025-26390	Update to V6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/62567396/
OZW772	Show more details https://support.industry.siemens.com/cs/ww/en/view/62564534/
OZW772 All versions < V8.0 affected by CVE-2025-26389	Update to V8.0 or later version https://support.industry.siemens.com/cs/ww/en/view/62564534/
OZW772 All versions < V6.0 affected by CVE-2025-26390	Update to V6.0 or later version https://support.industry.siemens.com/cs/ww/en/view/62564534/

WORKAROUNDS AND MITIGATIONS

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

GENERAL SECURITY RECOMMENDATIONS

As a general security measure Siemens strongly recommends to protect network access to affected products with appropriate mechanisms. It is advised to follow recommended security practices in order to run the devices in a protected IT environment.

PRODUCT DESCRIPTION

OZW devices (web servers) are used for remote monitoring of building controller devices, e.g. for monitoring of heating control or of air condition.

VULNERABILITY DESCRIPTION

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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-2025-26389

The web service in affected devices does not sanitize the input parameters required for the exportDiagramPage endpoint. This could allow an unauthenticated remote attacker to execute arbitrary code with root privileges.

CVSS v3.1 Base Score	10.0
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0 Base Score	10.0
CVSS v4.0 Vector	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CWE	CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Vulnerability CVE-2025-26390

The web service of affected devices is vulnerable to SQL injection when checking authentication data. This could allow an unauthenticated remote attacker to bypass the check and authenticate as Administrator user.

CVSS v3.1 Base Score	9.8
CVSS v3.1 Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0 Base Score	9.3
CVSS v4.0 Vector	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CWE	CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

ACKNOWLEDGMENTS

Siemens thanks the following party for its efforts:

RandoriSec for coordinated disclosure

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 (2025-05-13):

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.