CVE-2021-33771

CISA KEV
ACT NOW Priority: 0.00 BB Relevance: 0/100
Published: N/A Modified: N/A First seen: 2026-10-29 Status: pending_score

Description

Microsoft Windows kernel contains an unspecified vulnerability that allows for privilege escalation.

CISA Known Exploited Vulnerability

Vendor / Product Microsoft — Windows
Date Added 2021-11-03
Remediation Due 2021-11-17
https://nvd.nist.gov/vuln/detail/CVE-2021-33771

Affected Software (14)

VendorProductVersion
microsoft windows_10_1507 < 10.0.10240.19003
microsoft windows_10_1607 < 10.0.14393.4530
microsoft windows_10_1809 < 10.0.17763.2061
microsoft windows_10_1909 < 10.0.18363.1679
microsoft windows_10_2004 < 10.0.19041.1110
microsoft windows_10_20h2 < 10.0.19042.1110
microsoft windows_10_21h1 < 10.0.19043.1110
microsoft windows_8.1 -
microsoft windows_rt_8.1 -
microsoft windows_server_2004 < 10.0.19041.1110
microsoft windows_server_2012 -
microsoft windows_server_2016 < 10.0.14393.4530
microsoft windows_server_2019 < 10.0.17763.2061
microsoft windows_server_20h2 < 10.0.19042.1110

Bug Bounty Relevance

0 / 100
✓ Known exploited (KEV)

CVSS Score

Unscored

EPSS — Exploitation Probability

No EPSS data available

Intelligence Sources

kev ref →