CVE-2026-86101

Fireware OS Authorization Bypass in SAML Login Allows Unauthorized SSLVPN Access

State: Published
Severity: 7.2 High
Published: Sep 29, 2026
Updated: Sep 30, 2026
Reserved: Sep 4, 2026

Description

An improper authorization vulnerability in WatchGuard Fireware OS's SAML login process allows a remote, authenticated SAML user with access only to the Access Portal to obtain unauthorized Mobile VPN with SSL access through a specially crafted request.

Scores

CVSS	Score	Vector	Source
4.0	7.2 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:H/SA:N	WatchGuard

Weaknesses

Affected Products

Product	Versions
Fireware OSWatchGuard	2026.3 to before 2026.3.2Affected 2025.0 to before 2026.2.3Affected 12.0 to before 12.12.3Affected
Fireware OSWatchGuard	12.0 to before 12.5.21Affected

References

https://psirt.watchguard.com/CVE-2026-86101vendor-advisory

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