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 an integer underflow in a bounds check that allows for a heap buffer overflow read. An attacker could exploit this vulnerability by submitting a crafted file containing OLE2 content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software. For a description of this vulnerability, see the . Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.

• clamav clamav (>= 1.0.0 < 1.0.8) • clamav clamav (>= 1.1.0 < 1.4.2) • cisco secure endpoint (< 1.24.4) • cisco secure endpoint (< 1.25.1) • cisco secure endpoint (< 7.5.20) • cisco secure endpoint (>= 8.0.1.21160 < 8.4.3) • cisco secure endpoint private cloud (< 4.2.0)