CVE-2023-43503

Severity: high (CVSS 7.5 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: 2023-11-14 · updated 2026-06-17
Weakness: CWE-319

Description

A vulnerability has been identified in COMOS (All versions < V10.4.4). Caching system in the affected application leaks sensitive information such as user and project information in cleartext via UDP.

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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