CRITICAL 9.2 NVD

CVE-2026-93866

An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware OS's Access Portal allows a remote, unauthenticated attacker

An integer overflow vulnerability in the WebSocket connection handling used by WatchGuard Fireware OS's Access Portal allows a remote, unauthenticated attacker to write beyond the bounds of a heap buffer by sending a specially crafted request while the Access Portal feature is enabled.

References

Published: 2026-10-27 · Source: NVD · Feed updated: 2026-10-27
This critical severity vulnerability with a CVSS score of 9.2 was published on 2026-10-27 via NVD.

Risk Timeline

CVE Disclosed2026-10-27 · -1 days ago

Remediation Resources

Official Advisory
psirt.watchguard.com/CVE-2026-93866
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