VULNERABILITY INTELLIGENCE

CVE-2026-4266

CVSS score6.7 MEDIUM
EPSS probability0.27%
CISA KEVNot currently listed
Published2026-03-30
Last modified2026-08-28
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Description

An Insecure Deserialization vulnerability in WatchGuard Fireware OS allows an attacker that has obtained write access to the local filesystem through another vulnerability to execute arbitrary code in the context of the portald user. Note, this vulnerability does not affect Firebox platforms that do not support the Access Portal feature, including the T15 and T35.

Weakness classification

  • 5d1c2695-1a31-4499-88ae-e847036fd7e3: CWE-502

Primary references