CVE-2021-40449
HIGH KEV RANSOMWAREWin32k - Privilege Escalation
Title source: llmDescription
Win32k Elevation of Privilege Vulnerability
Exploits (11)
metasploit
WORKING POC
GOOD
by IronHusky, Costin Raiu, Boris Larin, Red Raindrop Team of Qi, , # detailed analysis report in Chinese showing how to replicate the vulnerability, , # First Public POC targeting Windows 10 build 14393 · rubypocwin
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/cve_2021_40449.rb
patchapalooza
WORKING POC
by BL0odz · local
https://github.com/BL0odz/CVE-2021-40449-NtGdiResetDC-UAF
References (3)
Scores
CVSS v3
7.8
EPSS
0.9179
EPSS Percentile
99.7%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CISA KEV
2021-11-17
VulnCheck KEV
2021-10-12
InTheWild.io
2021-10-12
ENISA EUVD
EUVD-2021-27626
Ransomware Use
Confirmed
CWE
CWE-416
Status
published
Products (21)
microsoft/windows_10_1507
< 10.0.10240.19086
microsoft/windows_10_1607
< 10.0.14393.4704
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
< 10.0.19041.1288
microsoft/windows_10_21h1
< 10.0.19041.1288
microsoft/windows_11
microsoft/windows_11_21h2
< 10.0.22000.258
microsoft/windows_7
... and 11 more
Published
Oct 13, 2021
KEV Added
Nov 17, 2021
Tracked Since
Feb 18, 2026