CVE-2026-86105

HighCVSS 7.1/10Last modified Oct 6, 2026

Description

An improper authorization vulnerability in Fireware OS's Access Portal reverse proxy allows an authenticated, low-privileged Access Portal user to access other web applications they are not authorized for by sending a specially crafted request for a different resource which they are authorized to access.

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Weakness enumeration

CWE-22 CWE-176 CWE-285

Affected software

Vendor	Product	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

https://psirt.watchguard.com/CVE-2026-86105Patch, Vendor Advisory

Timeline

Published: Sep 30, 2026
Last modified: Oct 6, 2026
NVD status: Analyzed

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