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HIGH · 8.1

CVE-2025-49735

Use after free in Windows KDC Proxy Service (KPSSVC) allows an unauthorized attacker to execute code over a network.

Vulnerability Description

Use after free in Windows KDC Proxy Service (KPSSVC) allows an unauthorized attacker to execute code over a network.

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
MicrosoftWindows Server 2012-
MicrosoftWindows Server 2016< 10.0.14393.8148
MicrosoftWindows Server 2019< 10.0.17763.7434
MicrosoftWindows Server 2022< 10.0.20348.3807
MicrosoftWindows Server 2022 23H2< 10.0.25398.1665
MicrosoftWindows Server 2025< 10.0.26100.4349

Related Weaknesses (CWE)

CWE-416

References

FAQ

What is CVE-2025-49735?

CVE-2025-49735 is a vulnerability with a CVSS score of 8.1 (HIGH). Use after free in Windows KDC Proxy Service (KPSSVC) allows an unauthorized attacker to execute code over a network.

How severe is CVE-2025-49735?

CVE-2025-49735 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-49735?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022, Microsoft Windows Server 2022 23H2.