---
id: CVE-2026-113469
title: Improper Signature Verification of Active Update Files
summary: >-
  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.
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-287
vendor: Stormshield
product: Stormshield Network Security
affected:
  - network_security >= 4.3.0 <= 4.3.44
  - network_security >= 4.8.0 <= 4.8.19
  - network_security >= 5.0.0 <= 5.0.9
  - network_security >= 5.1.0 <= 5.1.3
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T08:29:49.095Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-113469'
references:
  - url: 'https://advisories.stormshield.eu/2026-032/'
tags:
  - cve.org
ingestedAt: '2026-10-20T12:05:07.355Z'
---

## Overview

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.

## Affected

- `network_security >= 4.3.0 <= 4.3.44`
- `network_security >= 4.8.0 <= 4.8.19`
- `network_security >= 5.0.0 <= 5.0.9`
- `network_security >= 5.1.0 <= 5.1.3`

## Remediation

The following updates will fix this vulnerability:

  *  SNS 5.1.4 EA
  *  SNS 5.0.10
  *  SNS 4.8.20 LTSB

### Workarounds

*  Use only official Stormshield update servers or SMC mirror servers, if configured, ensuring that HTTPS is enabled.
  *  If you use custom update servers, ensure that HTTPS is enabled and verify that the SHA-256 hashes of the files hosted on your servers match those obtained from the official Stormshield update servers.