Out-of-bounds Read Affecting clamav1.4-freshclam package, versions <0:1.4.6-1.amzn2.0.1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.45% (37th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2-CLAMAV14FRESHCLAM-19457465
  • published1 Sept 2026
  • disclosed7 Aug 2026

Introduced: 7 Aug 2026

CVE-2026-20346  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 clamav1.4-freshclam to version 0:1.4.6-1.amzn2.0.1 or higher.
This issue was patched in ALAS2-2026-3894.

NVD Description

Note: Versions mentioned in the description apply only to the upstream clamav1.4-freshclam package and not the clamav1.4-freshclam package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A vulnerability in the PDF file format parser of ClamAV could allow an unauthenticated, remote attacker to cause a DoS condition or possibly other expanded impacts as a result of&nbsp;memory corruption on an affected device.

This vulnerability is due to improper boundary checks for content in PDF files during scanning, which may result in an out-of-bounds buffer read. An attacker could exploit this vulnerability by submitting a crafted PDF file to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to terminate, resulting in a DoS condition on the affected software.

CVSS Base Scores

version 3.1