SEPTEMBER 17, 2026
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Case File

CVE-2026-34223

HIGH · CVSS 8.2 EPSS 0.13% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-08 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

The Desigo CC ClickOnce and Flex Clients across multiple versions are vulnerable to Client Code Execution due to inadequate input validation in user-defined graphics documents. An attacker can exploit this vulnerability by crafting a malicious graphics document that executes arbitrary commands on the client system, potentially compromising the operating system and facilitating lateral movement within the network. Organizations using these affected clients should prioritize patching to mitigate the risk of exploitation, especially those with users who have elevated privileges.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit code execution

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-34223
Severity
HIGH
CVSS
8.2
EPSS
0.13%

Original NVD Description

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.