Check Point Advisories

ClamAV Out of Bounds Write (CVE-2026-20213)

Vulnerability
Protection

Check Point Reference:	CPAI-2026-13075
Date Published:	30 Sep 2026
Severity:	High
Last Updated:	Wednesday 30 September, 2026
Source:
Industry Reference:	CVE-2026-20213
Protection Provided by:	Security Gateway R82, R81, R80, R77, R75
Who is Vulnerable?	ClamAV prior to 1.4.5 ClamAV 1.5.0 and later, prior to 1.5.3
Vulnerability Description	A out of bounds write vulnerability in ClamAV allows remote attackers to cause memory corruption and a denial-of-service condition by submitting crafted PE files for scanning.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R82 / R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the ClamAV Out of Bounds Write (CVE-2026-20213) protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Web Server Enforcement Violation.
Attack Information: ClamAV Out of Bounds Write (CVE-2026-20213)