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Windows Kernel Privilege Escalation in Microsoft Windows
published 5 years ago · actively exploited
Summary
A vulnerability in the Windows kernel allows an attacker to gain higher-level access to a system. This could enable unauthorized access to sensitive data and system settings. Microsoft has likely released a patch to fix this issue, so it's essential to keep your Windows system up to date with the latest security updates.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Vendor | Product | Affected versions |
|---|---|---|
| microsoft | windows | All versions |
Original advisory text
Microsoft Windows Kernel Privilege Escalation Vulnerability
Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.
Exploitation
Known exploited
Listed in the CISA KEV catalogue - exploitation confirmed in the wild.
Timeline
Published3 Nov 2021
Updated29 May 2026
First seen29 May 2026
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