CVE-2023-43504

Name: CVE-2023-43504
Creator: NVD / NIST
Published: 2023-11-14T11:15:11.6+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2023-43504 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.85%

53.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Siemens	Comos	< 10.4.4

References

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

Timeline

Published: Nov 14, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-43504?

How severe is CVE-2023-43504?

CVE-2023-43504 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2023-43504?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-43504?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST