Cyber Resilience

CVE-2025-26635

Medium

Published: 08 April 2025

Published
08 April 2025
Modified
03 July 2025
KEV Added
Patch
CVSS Score v3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
EPSS Score 0.0023 46.0th percentile
Risk Priority 13 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-26635 is a medium-severity Weak Authentication (CWE-1390) vulnerability in Microsoft Windows 10 1809. Its CVSS base score is 6.5 (Medium).

Operationally, ranked at the 46.0th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network.

CWE(s)

Related Threats

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

Affected Assets

microsoft
windows 10 1809
≤ 10.0.17763.7136 · ≤ 10.0.17763.7136
microsoft
windows 10 21h2
≤ 10.0.19044.5737
microsoft
windows 10 22h2
≤ 10.0.19045.5737
microsoft
windows 11 22h2
≤ 10.0.22621.5189 · ≤ 10.0.22621.5189
microsoft
windows 11 23h2
≤ 10.0.22631.5189 · ≤ 10.0.22631.5189
microsoft
windows server 2019
≤ 10.0.17763.7136
microsoft
windows server 2022
≤ 10.0.20348.3453
microsoft
windows server 2022 23h2
≤ 10.0.25398.1551

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.

addresses: CWE-1390

Helps detect exploitation of weak authentication mechanisms by notifying of previous unauthorized logons.

addresses: CWE-1390

The IA policy requires strong authentication methods, reducing use of weak authentication.

addresses: CWE-1390

Enforces dynamic, context-aware authentication that mitigates weak static authentication by increasing requirements based on risk or conditions.

addresses: CWE-1390

Enforces authentication for users, reducing the viability of weak authentication mechanisms.

addresses: CWE-1390

Requires authentication mechanisms to meet applicable standards and guidelines, preventing weak authentication.

References