CVE-2026-86105CWE-176CWE-22CWE-285path-traversal

CVE-2026-86105

High · published September 30, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
22.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CVSS v4.0
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
EPSS
0.00308 · 22.4th percentile
Weaknesses
CWE-176 · Improper Handling of Unicode Encoding; CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'); CWE-285 · Improper Authorization
Published
2026-09-30T04:16Z
Affected products (4)
ProductVersionsFixed in
watchguard/fireware≥ 12.0, < 12.5.2112.5.21
watchguard/fireware≥ 12.12, < 12.12.312.12.3
watchguard/fireware≥ 2025.0, < 2026.2.32026.2.3
watchguard/fireware≥ 2026.3, < 2026.3.22026.3.2
References (1)
https://psirt.watchguard.com/CVE-2026-86105 · 5d1c2695-1a31-4499-88ae-e847036fd7e3
EPSS history
Timeline
  • 01 OCT 03:49Z
    EPSS moved — → 0%
    epss
  • 29 SEP 23:05Z
    Fireware OS Improper Authorization in Access Portal Reverse Proxy
    cvelistv5