CVE-2026-86105

EUVD-2026-89492
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.
Path Traversal
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.1 HIGH
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 23.96%
Affected Products (NVD)
VendorProductVersion
watchguardfireware
12.0 ≤
𝑥
< 12.5.21
watchguardfireware
12.12 ≤
𝑥
< 12.12.3
watchguardfireware
2025.0 ≤
𝑥
< 2026.2.3
watchguardfireware
2026.3 ≤
𝑥
< 2026.3.2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://psirt.watchguard.com/CVE-2026-86105