CVE-2026-105773: Canimaan Software ClamXAV local privilege escalation

Severity: high (CVSS 7.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-05 · updated 2026-10-26
Weakness: CWE-362

Description

Canimaan Software ClamXAV versions 3.3 - 3.11 contains a local privilege escalation vulnerability in the Privileged Helper Tool caused by a race condition and insufficient file validation, allowing a local attacker to execute arbitrary code with system privileges. Fixed in 3.11.1.

Affected products

Canimaan Software ClamXAV: from 3.3 before 3.11.1 — fixed in 3.11.1

How to fix

Upgrade to a fixed version: Canimaan Software ClamXAV 3.11.1. Check the vendor advisory for mitigations.

References

https://clamxav.com/version-history
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-278-01.json
https://www.cve.org/CVERecord?id=CVE-2026-105773

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