Siemens Desigo CC family

View CSAF Summary A Client Code Execution (CCE) vulnerability has been identified in Desigo CC, potentially allowing malicious actors to execute arbitrary code on client devices through specially crafted graphics documents. This vulnerability leverages user-defined graphics containing embedded scripts that are executed on client application instances. Successful exploitation could lead to compromise of the client operating system and potential lateral movement within the organization. The following versions of Siemens Desigo CC family are affected: Desigo CC family V6 vers:all/* (CVE-2026-34223) Desigo CC family V7 vers:all/* (CVE-2026-34223) CVSS Vendor Equipment Vulnerabilities v3 8.2 Siemens Siemens Desigo CC family Improper Control of Generation of Code ('Code Injection') Background Critical Infrastructure Sectors: Critical Manufacturing, Commercial Facilities Countries/Areas Deployed: Worldwide Company Headquarters Location: Germany Vulnerabilities Expand All + CVE-2026-34223 The affected application is vulnerable to Client Code Execution (CCE) due to insufficient input validation when handling scripts embedded within user-defined graphics documents. Specifically, when the script within a graphics document is designed or modified by an attacker to include malicious commands. When a user opens a compromised graphics document, the embedded script is executed on the client application instance, allowing an attacker to write arbitrary files to the client's operating system. Successful exploitation requires an attacker to craft a malicious graphics document and entice a user with sufficient privileges to display it. This could lead to compromise of the client operating system and potential lateral movement within the organization. View CVE Details Affected Products Siemens Desigo CC family Vendor: Siemens Product Version: Desigo CC family V6, Desigo CC family V7 Product Status: known_affected Remediations Mitigation Evaluate authorization policy for Graphics application following Least Privilege principle, so only required users have access to the configuration. None available Currently no fix is available. Mitigation For more information see the associated Siemens security advisory SSA-330084: Client Code Execution Vulnerability in Desigo CC Product Family - CSAF Version, SSA-330084: Client Code Execution Vulnerability in Desigo CC Product Family - HTML Version. Relevant CWE: CWE-94 Improper Control of Generation of Code ('Code Injection') Metrics CVSS Version Base Score Base Severity Vector String 3.1 8.2 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H Acknowledgments Michelin CERT reported this vulnerability to Siemens. General Recommendations As a general security measure, Siemens strongly recommends protecting network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends configuring 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 these vulnerabilities. Minimize network exposure for all control system devices and/or systems, and ensure