A path traversal vulnerability in the Fireware OS Web UI on WatchGuard Firebox systems may allow a privileged authenticated remote attacker to execute arbitrary code in the context of an elevated system process.This issue affects Fireware OS 12.6.1 up to and including 12.11.8 and 2025.1 up to and including 2026.1.2.
| Vendor | Product | Versions |
|---|---|---|
| watchguard | fireware os | 12.6.1, 2025.1 |
Downstream vendors/products affected by this vulnerability
| Vendor | Product | Source | Confidence |
|---|---|---|---|
| watchguard | firebox | cert_advisory | 90% |
Updated severity to HIGH and added patch available version 12.12.
Updated severity to HIGH, added patch version 12.12, and included new CWE IDs and CVE tags.
Updated severity to HIGH and added affected versions 12.11.8 and 2026.1.2.
Updated description with new technical details, changed severity to HIGH, and marked the vulnerability as actively exploited with an exploit available.
Updated severity to CRITICAL, corrected exploit availability to false, and provided a more detailed description.
Initial creation
