CVE-2025-20234

Medium

Description

A vulnerability in Universal Disk Format (UDF) processing 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 memory overread during UDF file scanning. An attacker could exploit this vulnerability by submitting a crafted file containing UDF 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 .

SeverityMedium
CVSS5.3
Exploit probability—
ProductClamav
PublishedJun 18, 2025
First seenJun 18, 2025

How to fix

Update
  • clamav clamav1.4.3 or later
  • cisco secure_endpoint1.26.1, 7.5.21, 8.4.5 or later
  • cisco secure_endpoint_private_cloud4.2.2 or later

Affected products

ProductAffected versionsFixed in
clamav clamav1.2.0 ≤ v < 1.4.31.4.3
cisco secure_endpointv < 1.26.1, v < 7.5.21, 8.0.1.21160 ≤ v < 8.4.51.26.1, 7.5.21, 8.4.5
cisco secure_endpoint_private_cloudv < 4.2.24.2.2

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