Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability
CVE-2025-24983 is a use-after-free vulnerability in the Windows Win32 Kernel Subsystem. Microsoft describes it as a local elevation-of-privilege flaw whereby an authorized attacker with low privileges can exploit a race condition in the vulnerable kernel subsystem to trigger use-after-free behavior. Successful exploitation can elevate the attacker from a low-privileged local context to SYSTEM. Microsoft reported that the vulnerability was exploited in the wild at disclosure time and that functional exploit code existed.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
If you can’t patch tonight, do this now.
Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Affected products & vendors
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
Recent activity
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Windows Win32 kernel subsystem elevation-of-privilege vulnerability described as requiring no user interaction and highlighted as a severe March 2025 exploited-in-the-wild issue.
A Windows Win32 Kernel Subsystem elevation of privilege vulnerability reported as exploited and weaponized by malware.
A Windows Win32 Kernel Subsystem elevation-of-privilege vulnerability that Microsoft reports as exploited in the wild.
A privilege escalation vulnerability in the Windows kernel, used in conjunction with the PipeMagic backdoor to facilitate ransomware deployment.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.