CVE-2025-20234 describes a denial of service vulnerability in ClamAV's Universal Disk Format (UDF) processing, affecting various Cisco and ClamAV products. This flaw, caused by a memory overread during UDF file scanning, allows an unauthenticated, remote attacker to terminate the ClamAV scanning process. Rated with a CVSS score of 7.5 (High), it has a low attack complexity and requires no user interaction, leading to a complete loss of availability. While there is no known active exploitation or public exploit code, the vulnerability has garnered some community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.2.0, < 1.4.3CPE matchmatch criteria | cpe:2.3:a:clamav:clamav:*:*:*:*:*:*:*:* | ||
< 1.26.1CPE matchmatch criteria | cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:linux:*:* | ||
< 1.26.1CPE matchmatch criteria | cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:macos:*:* | ||
< 7.5.21CPE matchmatch criteria | cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:windows:*:* | ||
>= 8.0.1.21160, < 8.4.5CPE matchmatch criteria | cpe:2.3:a:cisco:secure_endpoint:*:*:*:*:*:windows:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.