Stormshield Network Security up to 4.3.44/4.8.19/5.0.9/5.1.3 Signature Verification signature verification

Summaryinfo

A vulnerability categorized as very critical has been discovered in Stormshield Network Security up to 4.3.44/4.8.19/5.0.9/5.1.3. Affected is an unknown function of the component Signature Verification. Such manipulation leads to signature verification. This vulnerability is documented as CVE-2026-113469. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, has been found in Stormshield Network Security up to 4.3.44/4.8.19/5.0.9/5.1.3. Affected by this issue is an unknown functionality of the component Signature Verification. The manipulation with an unknown input leads to a signature verification vulnerability. Using CWE to declare the problem leads to CWE-347. The product does not verify, or incorrectly verifies, the cryptographic signature for data. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at advisories.stormshield.eu. This vulnerability is handled as CVE-2026-113469 since 10/20/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/20/2026).

Upgrading to version 4.8.20 LTSB, 5.0.10 or 5.1.4 EA eliminates this vulnerability.

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Productinfo

Vendor

• Stormshield

Name

• Network Security

Version

• 4.3.0
• 4.3.1
• 4.3.2
• 4.3.3
• 4.3.4
• 4.3.5
• 4.3.6
• 4.3.7
• 4.3.8
• 4.3.9
• 4.3.10
• 4.3.11
• 4.3.12
• 4.3.13
• 4.3.14
• 4.3.15
• 4.3.16
• 4.3.17
• 4.3.18
• 4.3.19
• 4.3.20
• 4.3.21
• 4.3.22
• 4.3.23
• 4.3.24
• 4.3.25
• 4.3.26
• 4.3.27
• 4.3.28
• 4.3.29
• 4.3.30
• 4.3.31
• 4.3.32
• 4.3.33
• 4.3.34
• 4.3.35
• 4.3.36
• 4.3.37
• 4.3.38
• 4.3.39
• 4.3.40
• 4.3.41
• 4.3.42
• 4.3.43
• 4.3.44
• 4.8.0
• 4.8.1
• 4.8.2
• 4.8.3
• 4.8.4
• 4.8.5
• 4.8.6
• 4.8.7
• 4.8.8
• 4.8.9
• 4.8.10
• 4.8.11
• 4.8.12
• 4.8.13
• 4.8.14
• 4.8.15
• 4.8.16
• 4.8.17
• 4.8.18
• 4.8.19
• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.0.6
• 5.0.7
• 5.0.8
• 5.0.9
• 5.1.0
• 5.1.1
• 5.1.2
• 5.1.3

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