CVE-2026-93864
CVE-2026-93864 · Fireware OS Link Following in firewalld Allows Local Arbitrary File Overwrite as Root
This page contains facts from public vulnerability sources. Check the original advisory before updating.
A link following vulnerability in WatchGuard Fireware OS’s firewall daemon allows a local attacker with code execution as a low-privileged system process to overwrite arbitrary files with root privileges, and to tamper with firewall IP set data, by planting a crafted file system object and triggering a list update. Written content is partially constrained.
CVSS 7.1 · High · EPSS 0.1% · Fix available
- Published
- Updated
Affected products and versions
fireware os
- Versions
- ≥ 2025.1, < 2026.4: Affected (custom)
- ≥ 12.0, < 12.12.4: Affected (custom)
Update to 12.12.4; Update to 2026.4
fireware os
- Versions
- ≥ 12.0, < 12.5.22: Affected (custom)
Update to 12.5.22