CVE-2026-86136CWE-22CWE-476CWE-862path-traversalbroken-access-control

CVE-2026-86136

High · published September 30, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
21.2
In the wild
Unconfirmed
What it is

A missing authorization vulnerability in the wgagent management daemon's session initialization function allows an authenticated, low-privileged user (including a read-only or guest administrator account) to crash the wgagent process and read arbitrary files accessible to the daemon by submitting a specially crafted management API request.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00297 · 21.2th percentile
Weaknesses
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'); CWE-476 · NULL Pointer Dereference; CWE-862 · Missing 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-2026-86136 · 5d1c2695-1a31-4499-88ae-e847036fd7e3
EPSS history
Timeline
  • 01 OCT 03:49Z
    EPSS moved — → 0%
    epss
  • 29 SEP 23:05Z
    Fireware OS Missing Authorization in wgagent Management API Allows Denial of Service - Variant A
    cvelistv5