9.8

CVE-2023-43504: siemens comos Classic Buffer Overflow

CVSS: 9.8v3.1CriticalModified
Published 14-11-2023Last modified 08-01-2025
Open JSON

Vulnerability summary

CVE-2023-43504 is a critical (CVSS 9.8) Classic Buffer Overflow vulnerability in siemens comos. EPSS estimates a 0.85% chance of exploitation in the next 30 days, higher than 57.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (NVD)
EPSS score
0.85%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-11-2023
    PublishedVulnerability first disclosed.
  2. 08-01-2025
    Last modifiedVulnerability information updated.

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.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.85%

Chance of exploitation in the next 30 days

Percentile

57%

Versus all other CVEs

30-day change

0.00 pp

From 0.85% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.85%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Siemens1 product
  • comosAll versions < V10.4.4 | < 10.4.4

1 vendor · 1 product

References

1 links