Live › vulnerability › CVE-2021-28310
Go to dashboardWin32k is the Windows kernel-mode graphics driver, and this flaw lets a process that is already running on the machine raise its privileges. An attacker with a foothold, such as a low-privilege user account or malware, can gain SYSTEM-level control of the Windows host.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Microsoft Win32k | vendor | – | – |
Check the installed Windows build against Microsoft's April 2021 security update for CVE-2021-28310 (run winver or Get-HotFix and compare to the advisory).
Install Microsoft's April 2021 security update for CVE-2021-28310 on every affected Windows host, then reboot.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
Microsoft Windows Win32k contains an unspecified vulnerability that allows for privilege escalation.
CISA required action: Apply updates per vendor instructions.
This page as .md · .json · in your agent: get_signal("CVE-2021-28310")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.