CVE-2026-86101

UNKNOWN 0.0

Fireware OS Authorization Bypass in SAML Login Allows Unauthorized SSLVPN Access

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-285 CWE-863
Vendor	watchguard
Product	fireware os
Published	Sep 29, 2026

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Affected Versions

WatchGuard / Fireware OS

2026.3 < 2026.3.2 2025.0 < 2026.2.3 12.0 < 12.12.3

WatchGuard / Fireware OS

12.0 < 12.5.21

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Laurent GAFFIE , secorizon.com