What is CVE-2025-20128?

CVE-2025-20128 is a medium-severity vulnerability in Cisco Secure Endpoint, classified under Heap-based Buffer Overflow. CVSS score: 5.3/10. Published 2025-01-22.

How severe is CVE-2025-20128?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2025-20128 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Cisco Secure Endpoint

CVE-2025-20128

A vulnerability in the Object Linking and Embedding 2 (OLE2) decryption routine of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to a…

Vulnerability class: Buffer Overflow

EPSS: 0.020 (83.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Cisco Secure Endpoint — versions 7.0.5, 6.2.19, 7.3.3

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2025-20128?: CVE-2025-20128 is a medium-severity vulnerability in Cisco Secure Endpoint, classified under Heap-based Buffer Overflow. CVSS score: 5.3/10. Published 2025-01-22.
How severe is CVE-2025-20128?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2025-20128 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.