CVE-2026-93862

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.

Score

CVSS 4.0 7.2 High

Status

Awaiting Analysis - 5d1c2695-1a31-4499-88ae-e847036fd7e3

Published

2026-10-27

Last modified

2026-10-28

Weaknesses

CWE-125, CWE-129, CWE-787, CWE-823

Affected products

• Fireware Os (Watchguard)

References

• https://psirt.watchguard.com/CVE-2026-93862