CVE-2023-43504

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-11-14 · updated 2026-06-17
Weakness: CWE-120

Description

A vulnerability has been identified in COMOS (All versions < V10.4.4). Ptmcast executable used for testing cache validation service in affected application is vulnerable to Structured Exception Handler (SEH) based buffer overflow. This could allow an attacker to execute arbitrary code on the target system or cause denial of service condition.

Affected products

Siemens COMOS: before 10.4.4 — fixed in 10.4.4

How to fix

Upgrade to a fixed version: Siemens COMOS 10.4.4. Check the vendor advisory for mitigations.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-137900.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-137900.pdf

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