CVE-2025-64661: Windows Shell Elevation of Privilege Vulnerability

Published Dec 9, 2025
·
Updated

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Shell allows an authorized attacker to elevate privileges locally.

Other sources

Windows Shell Elevation of Privilege Vulnerability

— Microsoft

Affected Software

64 affected componentsFixes available
Microsoft Windows Server 2025
Microsoft Windows 10=1607
Microsoft Windows Server 2016
Microsoft Windows 10=1607
Microsoft Windows Server 2016
Microsoft Windows Server 2022, 23H2 Edition
Microsoft Windows 11=24H2
Microsoft Windows 11=24H2
Microsoft Windows 11=23H2
Microsoft Windows 11=25H2
Microsoft Windows 11=23H2
Microsoft Windows 11=25H2
Microsoft Windows 10=22H2
Microsoft Windows 10=22H2
Microsoft Windows 10=21H2
Microsoft Windows 10=21H2
Microsoft Windows 10=22H2
Microsoft Windows Server 2025
Microsoft Windows Server 2022
Microsoft Windows Server 2019
Microsoft Windows 10=21H2
Microsoft Windows 10=1809
Microsoft Windows Server 2022
Microsoft Windows Server 2019
Microsoft Windows 10=1809
Microsoft Windows 10 1607<10.0.14393.8688
Microsoft Windows 10 1607<10.0.14393.8688
Microsoft Windows 10 1809<10.0.17763.8146
Microsoft Windows 10 1809<10.0.17763.8146
Microsoft Windows 10 21h2<10.0.19044.6691
Microsoft Windows 10 22h2<10.0.19045.6691
Microsoft Windows 11 23h2<10.0.22631.6345
Microsoft Windows 11 24h2<10.0.26100.7392
Microsoft Windows 11 25h2<10.0.26200.7392
Microsoft Windows Server 2016<10.0.14393.8688
Microsoft Windows Server 2019<10.0.17763.8146
Microsoft Windows Server 2022<10.0.20348.4467
Microsoft Windows Server 2022 23h2<10.0.25398.2025
Microsoft Windows Server 2025<10.0.26100.7392
Microsoft Windows 10=22H2
10.0.19045.6691
Microsoft Windows 11=25H2
10.0.26200.746210.0.26200.7392
Microsoft Windows 11=23H2
10.0.22631.6345
Microsoft Windows 11=25H2
10.0.26200.746210.0.26200.7392
Microsoft Windows Server 2025<10.0.26100.7462, <10.0.26100.7392
10.0.26100.746210.0.26100.7392
Microsoft Windows 10=22H2
10.0.19045.6691
Microsoft Windows 10=22H2
10.0.19045.6691
Microsoft Windows 10=21H2
10.0.19044.6691
Microsoft Windows 10=21H2
10.0.19044.6691
Microsoft Windows Server 2019<10.0.17763.8146
10.0.17763.8146
Microsoft Windows Server 2022<10.0.20348.4529, <10.0.20348.4467
10.0.20348.452910.0.20348.4467
Microsoft Windows 10=21H2
10.0.19044.6691
Microsoft Windows Server 2022<10.0.20348.4529, <10.0.20348.4467
10.0.20348.452910.0.20348.4467
Microsoft Windows Server 2019<10.0.17763.8146
10.0.17763.8146
Microsoft Windows 10=1809
10.0.17763.8146
Microsoft Windows 10=1809
10.0.17763.8146
Microsoft Windows Server 2016<10.0.14393.8688
10.0.14393.8688
Microsoft Windows 10=1607
10.0.14393.8688
Microsoft Windows Server 2016<10.0.14393.8688
10.0.14393.8688
Microsoft Windows 10=1607
10.0.14393.8688
Microsoft Windows 11=24H2
10.0.26100.746210.0.26100.7392
Microsoft Windows Server 2022, 23H2 Edition<10.0.25398.2025
10.0.25398.2025
Microsoft Windows 11=24H2
10.0.26100.746210.0.26100.7392
Microsoft Windows Server 2025<10.0.26100.7462, <10.0.26100.7392
10.0.26100.746210.0.26100.7392
Microsoft Windows 11=23H2
10.0.22631.6345

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19045.6691Patch KB5071546
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.26200.7462Fixed in 10.0.26200.7392Patch KB5072014
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.22631.6345Patch KB5071417
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.26100.7462Fixed in 10.0.26100.7392Patch KB5072014
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19044.6691Patch KB5071546
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.17763.8146Patch KB5071544
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.20348.4529Fixed in 10.0.20348.4467Patch KB5071413
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.14393.8688Patch KB5071543
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.25398.2025Patch KB5071542

Event History

Dec 9, 2025
CVE Published
via Microsoft·08:00 AM
Data Sourced
via Microsoft·08:00 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·08:00 AM
Affected Software
Updated
via Microsoft·08:00 AM
Description
CVE Published
via MITRE·05:56 PM
Data Sourced
via MITRE·05:56 PM
DescriptionSeverity
Data Sourced
via NVD·06:16 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2025-64661?

CVE-2025-64661 is classified as an Elevation of Privilege vulnerability which can grant an attacker higher privileges on an affected system.

2

How do I fix CVE-2025-64661?

To fix CVE-2025-64661, apply the appropriate security update provided by Microsoft for your specific version of Windows.

3

Which versions of Windows are affected by CVE-2025-64661?

CVE-2025-64661 affects various versions of Windows including Windows Server 2016, Windows 10, and Windows 11.

4

Can CVE-2025-64661 be exploited remotely?

No, CVE-2025-64661 requires local access to the system for an attacker to exploit the vulnerability.

5

What types of attacks does CVE-2025-64661 enable?

CVE-2025-64661 enables attackers to elevate their privileges, potentially allowing them to execute arbitrary code or access restricted areas of the system.

Contact

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