CVE-2021-27506: Clamav

Medium severity, CVSS 5.5. EPSS: 1.3% chance of exploitation in the next 30 days.

The ClamAV Engine (version 0.103.1 and below) component embedded in Storsmshield Network Security (SNS) is subject to DoS in case of parsing of malformed png files. This affect Netasq versions 9.1.0 to 9.1.11 and SNS versions 1.0.0 to 4.2.0. This issue is fixed in SNS 3.7.19, 3.11.7 and 4.2.1.

Affected products

• Clamav Clamav: up to and including 0.103.1
• Netasq Project Netasq: from 9.1.0, up to and including 9.1.11
• Stormshield Stormshield Network Security: from 1.0, up to and including 4.2.0

Published 2021-03-19. Last modified 2026-06-17.