VDB
CVE-2026-86105
CVE-2026-86105
PUBLISHED
CVSS 5.3 MEDIUM
Reported by WatchGuard · Published September 29, 2026
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.
Risk Scores
CVSS 4.0
5.3
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| WatchGuard | Fireware OS | 2026.3, 2025.0, 12.0 |
| WatchGuard | Fireware OS | 12.0 |
| WatchGuard | Fireware OS | 2026.3, 2025.0, 12.0 |
| watchguard | fireware_os | 12.0, 2026.3, 2025.0 |
Timeline
- Sep 29, 2026 CVE Published
- Sep 30, 2026 EPSS Score
- Oct 3, 2026 EPSS Score
- Oct 6, 2026 EPSS Score
- Oct 6, 2026 CVE Updated