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CVE-2025-26635

MEDIUMCVSS 6.5/10EPSS 1.29%

Last modified

CVE-2025-26635 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network.. EPSS estimates a 1.29% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1
6.5/10

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

EPSS Probability
1.29%

66.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MicrosoftWindows 10 1809< 10.0.17763.7136
MicrosoftWindows 10 21h2< 10.0.19044.5737
MicrosoftWindows 10 22h2< 10.0.19045.5737
MicrosoftWindows 11 22h2< 10.0.22621.5189
MicrosoftWindows 11 23h2< 10.0.22631.5189
MicrosoftWindows Server 2019< 10.0.17763.7136
MicrosoftWindows Server 2022< 10.0.20348.3453
MicrosoftWindows Server 2022 23h2< 10.0.25398.1551

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2025-26635?
Weak authentication in Windows Hello allows an authorized attacker to bypass a security feature over a network.
How severe is CVE-2025-26635?
CVE-2025-26635 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.29% probability of exploitation in the next 30 days.
How do I fix CVE-2025-26635?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-26635?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST