CVE-2021-40450

HIGH KEV

Windows 10 1809 < 10.0.17763.2237 - Elevation of Privilege

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2021-40450 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added April 25, 2022.

Description

Win32k Elevation of Privilege Vulnerability

References (2)

Core 2

Scores

CVSS v3 7.8
EPSS 0.0413
EPSS Percentile 88.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2022-04-25
VulnCheck KEV 2022-04-25
InTheWild.io 2021-10-12
ENISA EUVD EUVD-2021-27627
Status published
Products (10)
microsoft/windows_10_1809 < 10.0.17763.2237
microsoft/windows_10_1909 < 10.0.18363.1854
microsoft/windows_10_2004 < 10.0.19041.1288
microsoft/windows_10_20h2 < 10.0.19042.1288
microsoft/windows_10_21h1 < 10.0.19043.1288
microsoft/windows_11_21h2 < 10.0.22000.258
microsoft/windows_server_2004 < 10.0.19041.1288
microsoft/windows_server_2019 < 10.0.17763.2237
microsoft/windows_server_2022 < 10.0.20348.288
microsoft/windows_server_20h2 < 10.0.19042.1288
Published Oct 13, 2021
KEV Added Apr 25, 2022
Tracked Since Feb 18, 2026