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HIGH · 7.0

CVE-2026-25170

Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

Vulnerability Description

Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

CVSS Score

7.0

HIGH

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

Affected Products

VendorProductVersions
MicrosoftWindows 11 23H2< 10.0.22631.6783
MicrosoftWindows 11 24H2< 10.0.26100.7979
MicrosoftWindows 11 25H2< 10.0.26200.7979
MicrosoftWindows 11 26H1< 10.0.28000.1719
MicrosoftWindows Server 2022< 10.0.20348.4830
MicrosoftWindows Server 2022 23H2< 10.0.25398.2207
MicrosoftWindows Server 2025< 10.0.26100.32463

Related Weaknesses (CWE)

CWE-416

References

FAQ

What is CVE-2026-25170?

CVE-2026-25170 is a vulnerability with a CVSS score of 7.0 (HIGH). Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

How severe is CVE-2026-25170?

CVE-2026-25170 has been rated HIGH with a CVSS base score of 7.0/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-25170?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 11 23H2, Microsoft Windows 11 24H2, Microsoft Windows 11 25H2, Microsoft Windows 11 26H1, Microsoft Windows Server 2022.