Status: UPDATED
| Advisory ID: CVE-2026-34223
Key Details
| CVE | CVE-2026-34223 |
| CVSS Score / Version | 8.2 (High) / CVSS v3.1 |
| Updated | 2026-09-14 |
| CVSS Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
| CVSS Prose | attack vector is local; attack complexity is low; privileges required is low; user interaction is required; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high. |
| Affected products | Siemens Desigo CC ClickOnce Client V6, Siemens Desigo CC ClickOnce Client V7, Siemens Desigo CC Installed Client V6, and Siemens Desigo CC Installed Client V7 |
| Classified as | CWE-94 (Improper Control of Generation of Code ('Code Injection')) |
Affected Products, Subsystems & Sectors
| Subsystems | General OT |
| Sectors | Multiple |
What to Know
A vulnerability has been identified in Desigo CC ClickOnce Client V6 (All versions), Desigo CC ClickOnce Client V7 (All versions), Desigo CC family V8 (All versions), Desigo CC family V9 (All versions), Desigo CC Flex Client V6 (All versions), Desigo CC Flex Client V7 (All versions), Desigo CC Installed Client V6 (All versions), Desigo CC Installed Client V7 (All versions). 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. (NVD)
What to Do
Monitor Siemens's web page for any future patch releases.
References