CVE-2026-8480

Connection possible to the Administration portal with a revoked certificate

CVSS 4.3 MEDIUMCWE-295

Vexday Risk Score

10Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 4.3EPSS —KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

01 Jul 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A vulnerability was discovered on Stormshield Network Security 4.3.0 to 4.3.41 (included), 4.4.0 to 4.8.15 (included) , 5.0.2 EA to 5.0.5 (included) A revoked client certificate can still be used to authenticate to the captive‑admin portal, allowing an attacker who possesses the revoked certificate to gain administrative access.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected products

Stormshield · Stormshield Network Security

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References

https://advisories.stormshield.eu/2026-002/