CVE-2026-93862
Fireware OS Out-of-Bounds Read in FireCluster Sync Allows Denial of Service
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
An out-of-bounds read 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 repeatedly crash the firewall's cluster synchronization process by sending specially crafted network traffic, resulting in a sustained denial of service.
| CWE | CWE-125 CWE-129 CWE-787 CWE-823 |
| Vendor | watchguard |
| Product | fireware os |
| Published | Oct 27, 2026 |
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Affected Versions
WatchGuard / Fireware OS
2025.1 < 2026.4 12.0 < 12.12.4
WatchGuard / Fireware OS
12.0 < 12.5.22
References
Credits
WatchGuard AI Security Research