CVE-2023-20197: Cisco Secure Endpoint

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

A vulnerability in the filesystem image parser for Hierarchical File System Plus (HFS+) 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 incorrect check for completion when a file is decompressed, which may result in a loop condition that could cause the affected software to stop responding. An attacker could exploit this vulnerability by submitting a crafted HFS+ filesystem image to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to stop responding, resulting in a DoS condition on the affected software and consuming available system resources. For a description of this vulnerability, see the ClamAV blog .

Affected products

• Cisco Secure Endpoint: before 1.22.0 (fixed in 1.22.0); before 7.5.13.21586 (fixed in 7.5.13.21586); from 8.0.1.21160, before 8.1.7.21585 (fixed in 8.1.7.21585)
• Cisco Secure Endpoint Private Cloud: before 3.8.0 (fixed in 3.8.0)
• Fedoraproject Fedora: version 38 only

Published 2023-08-16. Last modified 2026-06-17.