AI and data stack advisories

Severe, 6 weeks977Projects326

977 severe, 6 weeks · 326 projects

WatchGuard TechnologiesCVE-2026-104381

WatchGuard Technologies Fireware OS: missing authentication

WatchGuard Technologies

CVE-2026-104381 · Published Oct 27, 2026 · updated Oct 28, 2026

Medium6.0
Fix: upgrade to 2026.4 or later (3 fixed versions below)
WatchGuard Technologies advisory

A missing authentication vulnerability in Fireware OS's FireCluster state synchronization feature allows an unauthenticated attacker positioned on the cluster synchronization network segment to force premature VPN tunnel termination by sending crafted cluster synchronization traffic.

Affected versions

PackageAffectedFixed in
Fireware OS
Product
>= 2025.1, < 2026.42026.4
>= 12.0, < 12.12.412.12.4
>= 12.0, < 12.5.2212.5.22
Details and references
CVSS 4.0
CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-294, CWE-306, CWE-345

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