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CVE-2025-21350

MEDIUMCVSS 5.9/10EPSS 1.89%

Last modified

CVE-2025-21350 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Windows Kerberos Denial of Service Vulnerability. EPSS estimates a 1.89% chance of exploitation in the next 30 days.

Description

Windows Kerberos Denial of Service Vulnerability

Metrics

CVSS 3.1
5.9/10

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

EPSS Probability
1.89%

76.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
MicrosoftWindows 10 1507< 10.0.10240.20915—
MicrosoftWindows 10 1607< 10.0.14393.7785—
MicrosoftWindows 10 1809< 10.0.17763.6893—
MicrosoftWindows 10 21h2< 10.0.19044.5487—
MicrosoftWindows 10 22h2< 10.0.19045.5487—
MicrosoftWindows 11 22h2< 10.0.22621.4890—
MicrosoftWindows 11 23h2< 10.0.22631.4890—
MicrosoftWindows 11 24h2< 10.0.26100.3194—
MicrosoftWindows Server 2008All versionsSp2
MicrosoftWindows Server 2008r2Sp1
MicrosoftWindows Server 2012All versions—
MicrosoftWindows Server 2012r2—
MicrosoftWindows Server 2016< 10.0.14393.7785—
MicrosoftWindows Server 2019< 10.0.17763.6893—
MicrosoftWindows Server 2022< 10.0.20348.3207—
MicrosoftWindows Server 2022 23h2< 10.0.25398.1425—
MicrosoftWindows Server 2025< 10.0.26100.3194—

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2025-21350?
Windows Kerberos Denial of Service Vulnerability
How severe is CVE-2025-21350?
CVE-2025-21350 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.89% probability of exploitation in the next 30 days.
How do I fix CVE-2025-21350?
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-2025-21350?

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

Scan your code now

Source: NVD / NIST