HIGHCVSS 7.5Actively exploited · CISA KEV since 2021-11-03Vulnerability

CVE-2021-36942

Microsoft Windows Local Security Authority (LSA) contains a spoofing vulnerability allowing an unauthenticated attacker to call a method on the LSARPC interface and coerce the domain controller to authenticate against another server using NTLM.

Properties

Euvd product
Windows Server 2019 (Server Core installation), Windows Server 2008 R2 Service Pack 1, Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation), Windows Server version 2004, Windows Server 2008 Service Pack 2, Windows Server version 20H2, Windows Server 2012, Windows Server 2016 (Server Core installation), Windows Server 2012 (Server Core installation), Windows Server 2008 Service Pack 2 (Server Core installation), Windows Server 2016, Windows Server 2019, Windows Server 2008 R2 Service Pack 1 (Server Core installation)
Vulnerability name
Microsoft Windows Local Security Authority (LSA) Spoofing Vulnerability
First seen
2026-08-10T15:10:06+00:00
Cvss score
7.5
Epss score
0.66023
Last seen
2026-10-19T12:00:27+00:00
Due date
2021-11-17
Euvd assigner
microsoft
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2021-11-03T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2021-11-03
Euvd base score version
3.1
Score
7.5
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Microsoft
Cvss vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
In Signal since
initial import (Sep 2026)
Euvd base score
7.5

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CVE-2021-36942 (CVSS 7.5) — Ninja Signal Threat Intelligence | Ninja Signal