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MEDIUM · 4.7

CVE-2026-49167

Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

Vulnerability Description

Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVSS Score

4.7

MEDIUM

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

Affected Products

VendorProductVersions
MicrosoftWindows 10 1809< 10.0.17763.9020
MicrosoftWindows 10 21H2< 10.0.19044.7548
MicrosoftWindows 10 22H2< 10.0.19045.7548
MicrosoftWindows 11 24H2< 10.0.26100.8875
MicrosoftWindows 11 25H2< 10.0.26200.8875
MicrosoftWindows 11 26H1< 10.0.28000.2525
MicrosoftWindows Server 2019< 10.0.17763.9020
MicrosoftWindows Server 2022< 10.0.20348.5386
MicrosoftWindows Server 2025< 10.0.26100.33158

Related Weaknesses (CWE)

CWE-416

References

FAQ

What is CVE-2026-49167?

CVE-2026-49167 is a vulnerability with a CVSS score of 4.7 (MEDIUM). Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.

How severe is CVE-2026-49167?

CVE-2026-49167 has been rated MEDIUM with a CVSS base score of 4.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-49167?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10 1809, Microsoft Windows 10 21H2, Microsoft Windows 10 22H2, Microsoft Windows 11 24H2, Microsoft Windows 11 25H2.