CVE-2021-1732
HighActively exploited (CISA KEV)Known to be used in ransomware campaigns
Description
Windows Win32k Elevation of Privilege Vulnerability
SeverityHigh
CVSS7.8
Exploit probability—
Product
Microsoft Win32k
PublishedFeb 25, 2021
First seenFeb 25, 2021
Added to KEVNov 3, 2021
Weakness typeCWE-787Out-of-bounds write
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Nov 17, 2021Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_10_1803 | No range specified | — |
| microsoft windows_10_1809 | No range specified | — |
| microsoft windows_10_1909 | No range specified | — |
| microsoft windows_10_2004 | No range specified | — |
| microsoft windows_10_20h2 | No range specified | — |
| microsoft windows_server_1909 | No range specified | — |
| microsoft windows_server_2004 | No range specified | — |
| microsoft windows_server_2019 | No range specified | — |
| microsoft windows_server_20h2 | No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.