Login Request a demo
Medium severity · published Jul 1, 2026
CVE-2026-8480
Connection possible to the Administration portal with a revoked certificate
4.3
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Adjacent
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SN
Stormshield Network Security · Stormshield
4.3.0 through 4.3.41; 4.4.0 through 4.8.15; 5.0.2 EA through 5.0.5 · source: vendor
Affected product
SN
Stormshield Network Security
Stormshield
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-8480
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-8480
advisories.stormshield.eu
https://advisories.stormshield.eu/2026-002/
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