CVE-2026-104381
Fireware OS Missing Authentication in FireCluster State Sync Allows BOVPN Tunnel Denial of Service
MEDIUM 6.0
At a glance
- Source
- NVD
- EPSS
- EPSS 0.13 % · percentile 3 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- WatchGuard
- NVD status
- Received
Description
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.
Weaknesses (CWE)
- CWE-294 — Authentication Bypass by Capture-replay
- CWE-306 — Missing Authentication for Critical Functionality
- CWE-345 — Insufficient Verification of Data Authenticity
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | MEDIUM 6.0 | 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 | WatchGuard |
| CVSS 4.0 | MEDIUM 6.0 | 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 | NVD · 5d1c2695-1a31-4499-88ae-e847036fd7e3 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-111160
- GCVE · GCVE-0-2026-104381
Affected products
| Product | Versions |
|---|---|
| WatchGuard · Fireware OS | affected 2025.1 < 2026.4 ; affected 12.0 < 12.12.4 |
| WatchGuard · Fireware OS | affected 12.0 < 12.5.22 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |