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 available Currently no fix is available SIMATIC WinCC V8.0 < V8.0 Update 11 Product Status: known_affected Remediations Vendor fix Update to V8.0 Update 11 or later version SIMATIC WinCC V8.1 < V8.1 Update 7 Product Status: known_affected Remediations Vendor fix Update 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 Con