CVE-2025-13940

6.7 mediumEPSS 0.1%

Medium (6.7) in watchguard fireware. EPSS 0.1% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

6.7 medium

CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

5.5 medium

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS: 0.1% chance of exploitation in the next 30 days; higher than 2% of CVEs (scores of 2026-10-31)
CWE: CWE-440
Published: 2025-12-04
Modified: 2026-09-25
Record from: the NVD, synced 2026-10-19

Affected

watchguard:fireware

References

https://psirt.watchguard.com/CVE-2025-13940
https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2025-00026

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