CVE-2026-86105: Fireware OS Improper Authorization in Access Portal Reverse Proxy
WatchGuard · Fireware OS
Vendor fix available · Affected: WatchGuard Fireware OS · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 23% of scored CVEs
DescriptionCVE.org
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.
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- WatchGuard · Fireware OSfrom 2026.3 before 2026.3.2; from 2025.0 before 2026.2.3; from 12.0 before 12.12.3
- WatchGuard · Fireware OSfrom 12.0 before 12.5.21
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- WatchGuard
- Published
- September 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-86105 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.