CVE-2026-8480

MEDIUM

Connection possible to the Administration portal with a revoked certificate

Title source: cna

Description

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.

References (1)

Core 1

Core References

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

Scores

CVSS v3 4.3

EPSS 0.0009

EPSS Percentile 0.4%

Attack Vector ADJACENT_NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-295

Status published

Products (3)

Stormshield/Stormshield Network Security 4.3.0 - 4.3.41

Stormshield/Stormshield Network Security 4.4.0 - 4.8.15

Stormshield/Stormshield Network Security 5.0.2 EA - 5.0.5

Published Jul 01, 2026

Tracked Since Jul 01, 2026