CVE-2021-36942 HIGH

CVE-2021-36942: Windows LSA Spoofing Vulnerability

Vendor Microsoft
Product Windows Server 2019
KEV Status Known Exploited
Ransomware Used in campaigns
Published August 12, 2021
Last update October 21, 2025
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:F/RL:O/RC:C

What the vulnerability does

01Description

Windows LSA Spoofing Vulnerability

CISA mandated remediation

02CISA Required Action

Apply updates per vendor instructions.

Key dates

03Disclosure timeline

August 12, 2021 CVE published
October 21, 2025 Record updated