High [CVE-2026-13054] path traversal vulnerability in the WatchGuard Fireware OS Management Web UI allows a privileged authenticated attacker to write arbitrary files on the Firebox's filesystem
This high-severity WatchGuard advisory covers CVE-2026-13054 affecting Fireware OS.
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Summary
A path traversal vulnerability in the WatchGuard Fireware OS Management Web UI allows a privileged authenticated attacker to write arbitrary files on the Firebox's filesystem.
- through 11.12.4_Update1
- through 12.12
- through 2026.2
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
- 2026.2.1
- 12.12.1
- 12.5.19
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
Mitigation
Upgrade to a fixed release: 2026.2.1, 12.12.1, 12.5.19. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 15 days ago·verify at source
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