Cyber Resilience

CVE-2025-4106

High

Published: 24 October 2025

Published
24 October 2025
Modified
15 April 2026
KEV Added
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Patch
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CVSS Score v4 8.9 CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
EPSS Score 0.0006 18.7th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-4106 is a high-severity Active Debug Code (CWE-489) vulnerability in Watchguard (inferred from references). Its CVSS base score is 8.9 (High).

Operationally, ranked at the 18.7th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

An authenticated admin user with access to both the management WebUI and command line interface on a Firebox can enable a diagnostic debug shell by uploading a platform and version-specific diagnostic package and executing a leftover diagnostic command. This issue…

more

affects Fireware OS: from 12.0 before 12.11.2.

CWE(s)
CWE-489

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

Watchguard
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inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-25 Thin Nodes
addresses: CWE-489

Minimal functionality precludes inclusion of active debug code or diagnostic interfaces.

References