CVE-2026-93862
Fireware OS Out-of-Bounds Read in FireCluster Sync Allows Denial of Service
- State
- Published
- Severity
- 7.2 High
- Published
- Oct 27, 2026
- Updated
- Oct 29, 2026
- Reserved
- Sep 18, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.2 High | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N | WatchGuard |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Fireware OSWatchGuard |
|
Fireware OSWatchGuard |
|
References
- https://psirt.watchguard.com/CVE-2026-93862vendor-advisory
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