Siemens WinCC

View CSAF
Summary
Multiple SIMATIC WinCC versions are affected by a database privilege escalation vulnerability that could allow an authenticated user with access to the database to execute commands on the underlying host system. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fixes and recommends mitigations for products where fixes are not or not yet available. The following versions of Siemens WinCC are affected:

SIMATIC WinCC V7.5 vers:all/* (CVE-2026-59241)
SIMATIC WinCC V8.0 vers:intdot/<8.0.0.11 (CVE-2026-59241)
SIMATIC WinCC V8.1 vers:intdot/<8.1.7 (CVE-2026-59241)





CVSS
Vendor
Equipment




v3 8.8
Siemens
SIMATIC WinCC V7.5






1 Vulnerability




Incorrect Privilege Assignment




Background

Critical Infrastructure Sectors: Critical Manufacturing, Transportation Systems, Energy, Healthcare and Public Health, Financial Services, Government Services and Facilities
Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany


Vulnerabilities

CVE-2026-59241
The affected application does not sufficiently restrict the permissions assigned to a database role. This could allow an authenticated remote attacker with database access to escalate privileges and execute arbitrary commands on the host system where SIMATIC WinCC is installed, potentially leading to a compromise of the system.
Read More

3 Affected Products

SIMATIC WinCC V7.5

Product Status: known_affected

Remediations

None availableCurrently no fix is available


SIMATIC WinCC V8.0 < V8.0 Update 11

Product Status: known_affected

Remediations

Vendor fixUpdate to V8.0 Update 11 or later version


SIMATIC WinCC V8.1 < V8.1 Update 7

Product Status: known_affected

Remediations

Vendor fixUpdate to V8.1 Update 7 or later version


Additional Metrics
Relevant CWE: CWE-266 Incorrect Privilege Assignment




CVSS Version
Base Score
Base Severity
Vector String




3.1
8.8
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H





View CVE Details



Acknowledgments

Siemens ProductCERT reported this vulnerability to CISA.


General 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

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

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

Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities.

Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices
on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.
CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies.
Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

Advisory Conversion Disclaimer
This ICSA is a verbatim republication of Siemens ProductCERT SSA-550198 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided "as-is" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact Siemens ProductCERT directly for any questions regarding this advisory.
Revision History

Initial Release Date: 2026-10-13




Date
Revision
Summary




2026-10-13
1
Publication Date


2026-10-22
2
Initial CISA Republication of Siemens ProductCERT SSA-550198 advisory




Legal Notice and Terms of Use

https://www.cisa.gov/news-events/ics-advisories/icsa-26-295-13

2026-10-22 12:00 UTC

--- BBBS/LiR v4.10 Toy-7
* Origin: LISTS. from TCOB1 READ ONLY (2:263/1)