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CVE-2021-36942

7.5
HIGHCVSS v3.1 Base Score
93.73%
HIGH RiskEPSS (100th percentile)
KEV
NVD-CWE-Other

Windows LSA Spoofing Vulnerability

Published: 8/12/2021
Modified: 10/30/2025
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ACTIVELY EXPLOITED IN THE WILD

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

Vulnerability Name:

Microsoft Windows Local Security Authority (LSA) Spoofing Vulnerability

Vendor / Product:

Microsoft Windows

Required Action:

Apply updates per vendor instructions.

Due Date: 11/17/2021(OVERDUE)
Ransomware Campaign Use
Added to KEV:

11/3/2021

Notes:

https://nvd.nist.gov/vuln/detail/CVE-2021-36942

Vulnerability Summary

CVSS v3 Score

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v2 Score

5

AV:N/AC:L/Au:N/C:N/I:P/A:N

EPSS Score (Exploitation Probability)

93.73%HIGH Exploitation Risk
100th percentile

This vulnerability has a 93.73% probability of being exploited in the next 30 days, ranking higher than 100% of all scored CVEs.

CWE Classification

NVD-CWE-Other

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