Dashboard / CVE-2026-90465

CVE-2026-90465

CRITICAL
INFO Priority: 0.02 BB Relevance: 64/100
Published: 2026-10-27 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Adjacent Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Adjacent
AC: Low
PR: None
UI: None
S: X
AT: None
VC: High
VI: High
VA: High

Description

A missing authentication vulnerability in the FireCluster Sync processing allows an attacker positioned on the cluster interconnect, such as a compromised cluster peer or an on-path network attacker, to invoke privileged firewall management actions as root by sending a specially crafted request.

Weakness Classification (4)

Affected Software (9)

VendorProductVersion
WatchGuard Fireware OS 2025.1 < 2026.4
WatchGuard Fireware OS 12.0 < 12.12.4
WatchGuard Fireware OS 12.0 < 12.5.22
WatchGuard Fireware OS 2025.1 < 2026.4
WatchGuard Fireware OS 12.0 < 12.12.4
WatchGuard Fireware OS 12.0 < 12.5.22
WatchGuard Fireware OS 2025.1 < 2026.4
WatchGuard Fireware OS 12.0 < 12.12.4
WatchGuard Fireware OS 12.0 < 12.5.22

References & Advisories (1)

Bug Bounty Relevance

64 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

9.4 / 10.0 v4.0
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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

EPSS — Exploitation Probability

0.24%
Raw Score 0.002370
Percentile 14.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00237
2026-10-28
0.00237

Intelligence Sources

mitre ref →
nvd ref →

External Links