CVE-2026-34223

LOWCVSS 8.6 · HIGH

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

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.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-94

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 2 mentions across 1 observed day

What's happening

  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-09-22: 209-22
Referenced assets1 URL
Full discourse2 posts
  • NewsTongue@NewsTongueX

    🔴 Siemens Desigo CC code-execution flaw affects all V6, V7 instances worldwide A Client Code Execution vulnerability (CVE-2026-34223) impacts Siemens Desigo CC family V6 and V7 across all versions. The flaw stems from insufficient input validation in user-defined graphics documents; malicious scripts embedded in graphics files execute on client instances when opened, potentially compromising the operating system and enabling lateral movement. Affected sectors: Critical Manufacturing, Commercial Facilities (worldwide deployment).

    0000045
    901 followersView on X
  • Aviatrix Threat Research Center@aviatrixtrc

    TRC analysis reveals attackers exploiting CVE-2026-34223 in Siemens Desigo CC systems use malicious graphics documents to execute arbitrary code on building automation clients. Once compromised, these systems become pivot points for lateral movement across industrial networks. Runtime segmentation helps contain such post-compromise activity in OT environments. #CloudSecurity #ZeroTrust 🔗 Full breakdown: https://aviatrix.ai/threat-research-center/siemens-desigo-cc-cve-2026-34223-client-code-execution

    0000039
    2.0K followersView on X

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