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TI-2023-23261 Aliases CVE-2023-43504GHSA-339q-f866-3fx6

Buffer overflow in Siemens COMOS

Priority MEDIUM 44CWE-120Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00851 58th percentileScored 2026-11-07
Fix Fixed COMOS (Siemens): V10.4.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
SiemensCOMOSbefore V10.4.4V10.4.4Patch availableCNA
  • COMOS VendorSiemens Affected before V10.4.4 Fixed in V10.4.4 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:siemens:comos:*:*:*:*:*:*:*:*before 10.4.4VulnerableSiemens
  • cpe:2.3:a:siemens:comos:*:*:*:*:*:*:*:* Versions before 10.4.4 Vulnerable ·Siemens

Remediation

  • Fix · CNA COMOS (Siemens) Fixed in V10.4.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-43504
  2. 2026-10-03 Alias added: GHSA-339q-f866-3fx6

References

Advisory 1

  • TI-2021-19919 Apache Log4j2 JNDI features do not protect against attacker controlled LDAP and other JNDI related endpoints KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-20393 Apache Log4j2 Thread Context Message Pattern and Context Lookup Pattern vulnerable to a denial of service attack KEVCVSS 3.1CRITICAL 9.0
  • TI-2023-23262 Improper access control in Siemens COMOS CVSS 3.1CRITICAL 9.6
  • TI-2023-10103 Buffer overflow in Siemens COMOS V10.2 CVSS 3.1CRITICAL 10.0
  • TI-2023-25103 Improper access control in Siemens COMOS CVSS 3.1CRITICAL 9.6
  • TI-2012-02612 Siemens COMOS before 9.1 Patch 413, 9.2 before Update 03 Patch 023, and 10.0 before Patch… CVSS 2.0HIGH 8.5
See all 30 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences