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CVE-2023-40729

• Severity: high (CVSS 7.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-09-12 · updated 2026-06-17
• Weakness: CWE-319

Description

A vulnerability has been identified in QMS Automotive (All versions < V12.39). The affected application lacks security control to prevent unencrypted communication without HTTPS. An attacker who managed to gain machine-in-the-middle position could manipulate, or steal confidential information.

Affected products

• Siemens QMS Automotive: before 12.39 — fixed in 12.39

How to fix

Upgrade to a fixed version: Siemens QMS Automotive 12.39. Check the vendor advisory for mitigations.

References

• https://cert-portal.siemens.com/productcert/pdf/ssa-147266.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-147266.pdf

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