CVE-2025-26635
Windows Hello Security Feature Bypass Vulnerability
MEDIUM
6.5
CVSS Score
Published: April 8, 2025 at 05:23 PM UTC
Updated: June 17, 2026 at 09:02 AM UTC
9 products affected across 1 vendorWindows Server 2019Windows 10 1809Windows Server 2022
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Severity
MEDIUM6.5
Exploit prediction
EPSS 1%
SSVC
No known exploit
Description
Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 10.0.17763.7136, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.19044.5737, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.19045.5737, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.22621.5189, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.22631.5189, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.17763.7136, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.20348.3453, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.25398.1551, so it looks safe — our inference, not a vendor statement
10.0.25398.0 ≤ v < 10.0.25398.1551
Affected range stops below 10.0.25398.1551, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-26635SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
6.5MEDIUMmicrosoft
Vector?
Quick Info
StatusANALYZED
CWE
CWE-1390
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