Description
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Published: 2026-06-09
Score: 7 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability arises from a use‑after‑free condition in the Windows kernel, allowing an authorized local user to execute code with kernel privileges, effectively escalating privileges. The weakness is identified as CWE‑122. The impact is the ability for a local attacker to gain broad system control, compromising confidentiality, integrity, and availability of the affected system.

Affected Systems

Affected releases include Windows 10 versions 1607, 1809, 21H2, 22H2 and Windows 11 versions 23H2, 24H2, 25H2, 26H1, as well as Windows Server 2012, 2012 R2, 2016, 2019, 2022, 2025 and the corresponding Server Core installations.

Risk and Exploitability

The CVSS score of 7.0 places the vulnerability in the high‑severity range. The EPSS score is not available, and the vulnerability is not listed in the CISA KEV catalog, indicating no known active exploitation at the time of analysis. The likely attack vector is a local, authenticated user exploiting the use‑after‑free to run code with elevated kernel rights.

Generated by OpenCVE AI on June 9, 2026 at 19:36 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Download and install the latest cumulative update for the specific Windows 10 or Windows 11 version that contains the fix for CVE‑2026‑45653 from Microsoft’s update catalog or Windows Update
  • After installation, reboot the system to ensure the kernel is rebuilt with the patch applied
  • As a temporary containment measure, review and disable any unnecessary third‑party kernel drivers or local services that could provide privileged access until the patch is available

Generated by OpenCVE AI on June 9, 2026 at 19:36 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 09 Jun 2026 17:15:00 +0000

Type Values Removed Values Added
Description Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
Title Windows Kernel Elevation of Privilege Vulnerability
First Time appeared Microsoft
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows Server 2012
Microsoft windows Server 2012 R2
Microsoft windows Server 2016
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
Weaknesses CWE-122
CPEs cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_21H2:*:*:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_10_22H2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_23H2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_11_24H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_25H2:*:*:*:*:*:*:arm64:*
cpe:2.3:o:microsoft:windows_11_26H1:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012_R2:*:*:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft windows 10 1607
Microsoft windows 10 1809
Microsoft windows 10 21h2
Microsoft windows 10 22h2
Microsoft windows 11 23h2
Microsoft windows 11 24h2
Microsoft windows 11 25h2
Microsoft windows 11 26h1
Microsoft windows Server 2012
Microsoft windows Server 2012 R2
Microsoft windows Server 2016
Microsoft windows Server 2019
Microsoft windows Server 2022
Microsoft windows Server 2025
References
Metrics cvssV3_1

{'score': 7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Subscriptions

Microsoft Windows 10 1607 Windows 10 1809 Windows 10 21h2 Windows 10 22h2 Windows 11 23h2 Windows 11 24h2 Windows 11 25h2 Windows 11 26h1 Windows Server 2012 Windows Server 2012 R2 Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows Server 2025
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-06-09T21:50:55.968Z

Reserved: 2026-05-12T20:33:35.157Z

Link: CVE-2026-45653

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-09T17:17:32.287

Modified: 2026-06-09T19:32:51.440

Link: CVE-2026-45653

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-09T19:45:12Z

Weaknesses