What is CVE-2023-43504?

CVE-2023-43504 is a critical-severity vulnerability in Siemens Comos, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.6/10. Published 2023-11-14.

How severe is CVE-2023-43504?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Buffer overflow in Siemens Comos

CVE-2023-43504

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.

Vulnerability class: Buffer Overflow

EPSS: 0.009 (54.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Siemens Comos — versions All versions < V10.4.4

Weakness classification (CWE)

CWE-120 — Buffer Copy without Checking Size of Input (Classic Buffer Overflow)

References

productcert@siemens.com (Vendor Advisory)

Frequently asked questions

What is CVE-2023-43504?: CVE-2023-43504 is a critical-severity vulnerability in Siemens Comos, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.6/10. Published 2023-11-14.
How severe is CVE-2023-43504?: Critical severity. CVSS v3 base score is 9.6 out of 10.