CVE-2026-93866Published

Fireware OS Pre-Authentication Integer Overflow in Access Portal Allows Out-of-Bounds Write

Exact source revision recorded 27 Oct 2026 16:43:42 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-93866

Published

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.

Source published: 27 Oct 2026 15:52:27 UTC
Source modified: 27 Oct 2026 15:52:27 UTC
Observed here: 27 Oct 2026 16:43:42 UTC
Source terms: CVE Program Terms of Use

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CVSS 4.0 · 9.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N