View CSAF Summary COMOS is affected by multiple vulnerabilities that could allow an attacker to execute arbitrary code or cause denial of service condition, data infiltration or perform access control violations. Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends countermeasures for products where fixes are not, or not yet available. The following versions of Siemens COMOS are affected: COMOS V10.4 vers:intdot/<10.4.5, vers:intdot/<10.4.5 (CVE-2024-47875, CVE-2025-2783) COMOS V10.4.5 vers:intdot/<10.4.5.0.2 (CVE-2024-11053, CVE-2025-10148) COMOS V10.5 vers:intdot/<10.5.2, vers:intdot/<10.5.2 (CVE-2025-2783, CVE-2024-47875) COMOS V10.6 vers:all/* (CVE-2024-11053, CVE-2025-10148, CVE-2025-40800, CVE-2025-40801) CVSS Vendor Equipment Vulnerabilities v3 10 Siemens Siemens COMOS Exposure of Sensitive Information to an Unauthorized Actor, Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), Improper Input Validation, Generation of Predictable Numbers or Identifiers, Improper Certificate Validation Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities Expand All + CVE-2024-11053 When asked to both use a `.netrc` file for credentials and to follow HTTP redirects, curl could leak the password used for the first host to the followed-to host under certain circumstances. This flaw only manifests itself if the netrc file has an entry that matches the redirect target hostname but the entry either omits just the password or omits both login and password. View CVE Details Affected Products Siemens COMOS Vendor: Siemens Product Version: COMOS V10.4.5, COMOS V10.6 Product Status: known_affected Remediations None available Currently no fix is available Vendor fix Contact customer support to receive patch and update information Relevant CWE: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Metrics CVSS Version Base Score Base Severity Vector String 3.1 3.7 LOW CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N CVE-2024-47875 DOMPurify is a DOM-only, super-fast, uber-tolerant XSS sanitizer for HTML, MathML and SVG. DOMpurify was vulnerable to nesting-based mXSS. This vulnerability is fixed in 2.5.0 and 3.1.3. View CVE Details Affected Products Siemens COMOS Vendor: Siemens Product Version: COMOS V10.4, COMOS V10.5 Product Status: known_affected Remediations Vendor fix Update to V10.4.5 or later version Vendor fix Update to V10.5.2 or later version Relevant CWE: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Metrics CVSS Version Base Score Base Severity Vector String 3.1 10 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:H CVE-2025-2783 Incorrect handle provided in unspecified circumstances in Mojo in Google Chrome on Windows prior to 134.0.6998.177 allowed a remote attacker to perform a sandbox escape via a malicious file. View CVE Details Affected Products Siemens COMOS Vendor: Siemens Product Version: COMOS V10.4, COMOS V10.5 Product Status: known_affected Remediations Vendor fix Update to V10.4.5 or later version Vendor fix Update to V10.5.2 or later version Relevant CWE: CWE-20 Improper Input Validation Metrics CVSS Version Base Score Base Severity Vector String 3.1 8.3 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H CVE-2025-10148 curl's websocket code did not update the 32 bit mask pattern for each new outgoing frame as the specification says. Instead it used a fixed mask that persisted and was used throughout the entire connection. A predictable mask pattern allows for a malicious server to induce traffic between the two communicating parties that could be interpreted by an involved proxy (configured or transparent) as genuine, real, HTTP traffic with content and thereby poison its cache. That cached poisoned content could then be served to all users of that proxy. View CVE Details Affected Products Siemens COMOS Vendor: Siemens Product Version: COMOS V10.4.5, COMOS V10.6 Product Status: known_affected Remediations None available Currently no fix is available Vendor fix Contact customer support to receive patch and update information Relevant CWE: CWE-340 Generation of Predictable Numbers or Identifiers Metrics CVSS Version Base Score Base Severity Vector String 3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVE-2025-40800 The IAM client in affected products is missing server certificate validation while establishing TLS connections to the authorization server. This could allow an attacker to perform a man-in-the-middle attack. View CVE Details Affected Products Siemens COMOS Vendor: Siemens Product Version: COMOS V10.6 Product Status: known_affected Remediations None available Currently no fix is available Relevant CWE: CWE-295 Improper Certificate Validation Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.4 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N CVE-2025-40801 The SALT SDK is missing server certificate validation while establishing TLS connections to the authorization server. This could allow an attacker to perform a man-in-the-middle attack. View CVE Details Affected Products Siemens COMOS Vendor: Siemens Product Version: COMOS V10.6 Product Status: known_affected Remediations None available Currently no fix is available Relevant CWE: CWE-295 Improper Certificate Validation Metrics CVSS Version Base Score Base Severity Vector String 3.1 8.1 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Acknowledgments Siemens ProductCERT reported these vulnerabilities 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. Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability. Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolate 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 recent version available. Also recognize VPN is only as secure as its 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. 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 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-212953 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: 2025-12-09 Date Revision Summary 2025-12-09 1 Publication Date 2026-01-13 2 Removed CVE-2024-11053 and CVE-2025-10148 from COMOS V10.5.2 as this version line is not affected 2026-02-10 3 Added fix for COMOS V10.4.5 2026-02-12 4 Initial CISA Republication of Siemens ProductCERT SSA-212953 advisory Legal Notice and Terms of Use