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Medium severity5.5NVD Advisory· Published Dec 4, 2025· Updated Sep 25, 2026

CVE-2025-13940

CVE-2025-13940

Description

An Expected Behavior Violation [CWE-440] vulnerability in WatchGuard Fireware OS may allow an attacker to bypass the Fireware OS boot time system integrity check and prevent the Firebox from shutting down in the event of a system integrity check failure. The on-demand system integrity check in the Fireware Web UI will correctly show a failed system integrity check message in the event of a failure.

AI Insight

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Affected products

3
  • WatchGuard/Firewarecpe-rescue3 versions
    12.8.1+ 2 more
    • (no CPE)range: 12.8.1
    • cpe:2.3:o:watchguard:fireware:*:*:*:*:*:*:*:*range: >=2025.1,<2025.1.3
    • (no CPE)range: from 12.8.1 through 12.11.4, from 2025.1 through 2025.1.2

Patches

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References

2

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