CVE-2026-90465#
Fireware OS Missing Authentication in FireCluster Sync Allows Privilege Escalation
Summary #
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.
Product status #
| Product | Affected | Not affected |
|---|---|---|
| Fireware OS | ||
| Default | >= 2025.1, < 2026.4, >= 12.0, < 12.12.4 | >= 2026.4, >= 12.12.4 |
| T15/T35 | >= 12.0, < 12.5.22 | >= 12.5.22 |
Required Configuration for Exposure #
This vulnerability affects Firebox appliances that are configured as a member of a FireCluster.
Weakness Type and Impact #
- CWECWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
- CWECWE-290Authentication Bypass by Spoofing
- CWECWE-306Missing Authentication for Critical Function
- CWECWE-862Missing Authorization
- CAPECCAPEC-115Authentication Bypass
- CAPECCAPEC-248Command Injection
- CAPECCAPEC-666BlueSmacking
Exploitation Status #
WatchGuard is not aware of any exploitation of this vulnerability in the wild.
Solution #
Fireware OS 2026.4, Fireware OS 12.12.4, Fireware OS 12.5.22
References #
Credits #
- WatchGuard AI Security Researchfinder