Fireware OS Missing Authorization in wgagent Management API Allows Denial of Service - Variant A
Published Sep 29, 2026
7.1
HIGHCVSS 4.0
EPSS 0.27%
Description
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.
Affected products
-
- Version 12.0StatusaffectedConstraints<12.12.3
- Version 12.0StatusaffectedConstraints<12.5.21
- Version 2025.0StatusaffectedConstraints<2026.2.3
- Version 2026.0StatusaffectedConstraints<2026.3.2
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WatchGuard | Fireware OS | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Fireware OS 2026.3.2, Fireware OS 2026.2.3, Fireware OS 12.12.3, Fireware OS 12.5.21
Metrics
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
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Sep 30, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.27% (0.00265) | 16.74th | v5 (v2026.06.15) |
| Oct 1, 2026 | 0.27% (0.00265) | 16.66th | v5 (v2026.06.15) |
References (1)
- https://psirt.watchguard.com/CVE-2026-86136 vendor-advisory
| Link | Providers | Tags |
|---|---|---|
| https://psirt.watchguard.com/CVE-2026-86136 | vendor-advisory |
Change history (0)
No recorded changes yet.