Security Advisory

CVE-2026-20031

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-03-04 17:17:33

Last updated 2026-03-05 15:52:07

Assigner cisco

State PUBLISHED

Description

A vulnerability in the HTML Cascading Style Sheets (CSS) module 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 improper error handling when splitting UTF-8 strings. An attacker could exploit this vulnerability by submitting a crafted HTML file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the scanning process.

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