Advisoriesby IbisWatchGuard TechnologiesCVE-2026-13053
WatchGuard Technologies Fireware OS: out-of-bounds write
Fix: upgrade to 2026.2.1 or later (4 fixed versions below)
An Out-of-bounds Write vulnerability in WatchGuard Fireware OS's CLI could allow an authenticated privileged user to execute arbitrary code via a specially crafted CLI command.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Fireware OS Product | >= 2025.1, < 2026.2.1 | 2026.2.1 |
| >= 12.0, < 12.12.1 | 12.12.1 | |
| <= 11.0 | No fix yet | |
| >= 12.0, < 12.11.9 | 12.11.9 | |
| >= 12.0, < 12.5.19 | 12.5.19 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-787