Siemens COMOS

As of January 10, 2023, CISA will no longer be updating ICS security advisories for Siemens product vulnerabilities beyond the initial advisory. For the most up-to-date information on vulnerabilities in this advisory, please see Siemens’ ProductCERT Security Advisories (CERT Services | Services | Siemens Global). View CSAF

1. EXECUTIVE SUMMARY CVSS v3 9.3 ATTENTION: Exploitable remotely/low attack complexity Vendor: Siemens Equipment: COMOS Vulnerabilities: Incomplete List of Disallowed Inputs, Cleartext Transmission of Sensitive Information
2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker to execute arbitrary code or lead to data infiltration.
3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Siemens reports that the following products are affected: Siemens COMOS with COMOS Web deployed: Versions prior to 10.4.5 (CVE-2023-45133) Siemens COMOS that use COMOS Snapshots component: Versions prior to 10.4.5 (CVE-2024-0056) 3.2 VULNERABILITY OVERVIEW 3.2.1 INCOMPLETE LIST OF DISALLOWED INPUTS CWE-184 Babel is a compiler for writing JavaScript. In @babel/traverse prior to versions 7.23.2 and 8.0.0-alpha.4 and all versions of babel-traverse, using Babel to compile code that was specifically crafted by an attacker can lead to arbitrary code execution during compilation, when using plugins that rely on the path.evaluate() or path.evaluateTruthy() internal Babel methods. Known affected plugins are @babel/plugin-transform-runtime; @babel/preset-env when using its useBuiltIns option; and any “polyfill provider” plugin that depends on @babel/helper-define-polyfill-provider, such as babel-plugin-polyfill-corejs3, babel-plugin-polyfill-corejs2, babel-plugin-polyfill-es-shims, babel-plugin-polyfill-regenerator. No other plugins under the @babel/ namespace are impacted, but third-party plugins might be. Users that only compile trusted code are not impacted. The vulnerability has been fixed in @babel/traverse@7.23.2 and @babel/traverse@8.0.0-alpha.4. Those who cannot upgrade @babel/traverse and are using one of the affected packages mentioned above should upgrade them to their latest version to avoid triggering the vulnerable code path in affected @babel/traverse versions: @babel/plugin-transform-runtime v7.23.2, @babel/preset-env v7.23.2, @babel/helper-define-polyfill-provider v0.4.3, babel-plugin-polyfill-corejs2 v0.4.6, babel-plugin-polyfill-corejs3 v0.8.5, babel-plugin-polyfill-es-shims v0.10.0, babel-plugin-polyfill-regenerator v0.5.3. CVE-2023-45133 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.3 has been calculated; the CVSS vector string is (CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). 3.2.2 CLEARTEXT TRANSMISSION OF SENSITIVE INFORMATION CWE-319 Microsoft.Data.SqlClient and System.Data.SqlClient SQL Data Provider Security Feature Bypass Vulnerability CVE-2024-0056 has been assigned to this vulnerability. A CVSS v3.1 base score of 8.7 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N). 3.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing COUNTRIES/AREAS DEPLOYED: Worldwide COMPANY HEADQUARTERS LOCATION: Germany 3.4 RESEARCHER Siemens ProductCERT reported these vulnerabilities to CISA.
4. MITIGATIONS Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk: COMOS: Update to V10.4.5 or later version As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens’ operational guidelines for industrial security and following recommendations in the product manuals. Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage For more information see the associated Siemens security advisory SSA-682326 in HTML and CSAF. CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities, such as: 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). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are 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. 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. CISA also recommends users take the following measures to protect themselves from social engineering attacks: Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploitation specifically targeting these vulnerabilities has been reported to CISA at this time.
5. UPDATE HISTORY November 13, 2025: Initial Republication of Siemens ProductCERT SSA-682326