CVE-2021-27506

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2021-03-19 · updated 2026-06-17

Description

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

Cisco ClamAV: through 0.103.1
Netasq Project Netasq: from 9.1.0 through 9.1.11
Stormshield Network Security: from 1.0 through 4.2.0

References

https://advisories.stormshield.eu/2021-003/
https://blog.clamav.net/2021/02/clamav-01031-patch-release.html
https://advisories.stormshield.eu/2021-003/
https://blog.clamav.net/2021/02/clamav-01031-patch-release.html

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