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CVE-2025-24983: Microsoft Windows Win32k Use-After-Free Vulnerability

criticalknown exploitedCVE-2025-24983
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
Microsoft Windows Win32 Kernel Subsystem contains a use-after-free vulnerability that allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoftproduct: Windows Win32kPrivilege escalation
What
This vulnerability allows an authorized attacker to elevate privileges locally due to a use-after-free condition.
Who is affected
Authorized attackers on systems running Windows Win32k are affected.
Urgency
Remediation is urgent as the vulnerability is actively exploited and has critical severity.
Action
Update the Windows system to the latest version to address this issue.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2025-03-11
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-24983

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2025-24983coverage & exploitation statusNVD · CVE.org

Recent advisories for Microsoft Windows Win32k

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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