VulnerabilityAnalyzed

CVE-2025-24983

Microsoft Windows Win32k Use-After-Free Vulnerability

KEVHIGH 7.0EPSS 1.35%

Does this matter?

Known to be exploited in the wild (CISA KEV, CISA remediation deadline 1 April 2025). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.

Description

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

CVSS 3.1: 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 1.35% probability · 70th percentile
CISA KEV: Listed 11 March 2025 · due 1 April 2025
Weakness: CWE-416
Affected: microsoft/windows 10 1507 · microsoft/windows 10 1607 · microsoft/windows server 2008 · microsoft/windows server 2012 · microsoft/windows server 2016
Source: secure@microsoft.com

CISA notes

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-24983 ; https://nvd.nist.gov/vuln/detail/CVE-2025-24983

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-24983Patch, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-24983US Government Resource

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.