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Vulnerabilities

Vulnerability · CVE-2025-24983

Microsoft Windows Win32k Use-After-Free Vulnerability

Published Mar 11, 2025 · catalog updated Jun 17, 2026 · Microsoft Windows

Patch now

CVE-2025-24983 is in the CISA known-exploited catalog, due Apr 1, 2025. Confirm Microsoft Windows against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
High7.0
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
1.38%
Remediation
Remediation guidance
Affected products
cpe microsoft/windows 10 1507 · cpe microsoft/windows 10 1607 · cpe microsoft/windows server 2008 · cpe microsoft/windows server 2012 · vendor Microsoft Windows

Microsoft Windows Win32 Kernel Subsystem contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe microsoft/windows 10 1507version unspecified
  • cpe microsoft/windows 10 1607version unspecified
  • cpe microsoft/windows server 2008r2
  • cpe microsoft/windows server 2012version unspecified
  • vendor Microsoft Windowsversion unspecified

How to fix CVE-2025-24983

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-24983 is in the CISA known-exploited catalog, due Apr 1, 2025. Confirm Microsoft Windows against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Compare what you have installed with microsoft/windows server 2008 r2. Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

What should an analyst verify?

CWE-416: Use After Free. EPSS 1.38%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Windows security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 11, 2025 · Catalog

    Detected

    Microsoft Windows Win32 Kernel Subsystem contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.

  2. Mar 11, 2025 · CISA KEV

    Known exploited

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  3. Apr 1, 2025 · CISA KEV

    Remediation due

    Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  4. Jun 17, 2026 · Catalog

    Updated

    Microsoft Windows Win32 Kernel Subsystem contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.

Sources

  • CISA KEVConfirmed exploitationCVE-2025-24983

    Microsoft Windows Win32 Kernel Subsystem contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2025-24983

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-24983

    30-day exploitation probability 1.4%

    first.org
  • NIST NVDVulnerability recordCVE-2025-24983

    Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2025-24983

    Microsoft Windows Win32 Kernel Subsystem contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.