Cyber Resilience

CVE-2025-6523

Critical

Published: 22 July 2025

Published
22 July 2025
Modified
25 November 2025
KEV Added
—
Patch
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CVSS Score v4 9.5 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/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 0.0018 39.8th percentile
Risk Priority 19 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-6523 is a critical-severity Use of Weak Credentials (CWE-1391) vulnerability in Devolutions Devolutions Server. Its CVSS base score is 9.5 (Critical).

Operationally, ranked at the 39.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Use of weak credentials in emergency authentication component in Devolutions Server allows an unauthenticated attacker to bypass authentication via brute forcing the short emergency codes generated by the server within a feasible timeframe. This issue affects the following versions :…

more

* Devolutions Server 2025.2.2.0 through 2025.2.3.0 * Devolutions Server 2025.1.11.0 and earlier

CWE(s)
CWE-1391

Related Threats

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

Affected Assets

devolutions
devolutions server
≤ 2025.1.11.0 · 2025.2.2.0 — 2025.2.4.0

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.

IA-5 Authenticator Management
addresses: CWE-1391

Ensuring sufficient strength of mechanism for authenticators prevents use of weak credentials.

IA-7 Cryptographic Module Authentication
addresses: CWE-1391

Enforces use of credentials that comply with standards rather than weak credentials for module access.

References