Firetruck

CVE-2021-36942

KEV · Ransomware
Updated Aug 10, 2026 · PUBLISHED
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Description

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.

Full record on cve.org →

Affected packages

PackageVendor / ProductVersion rangeStatus
Windows Server 2008 R2 Service Pack 1Microsoft / Windows Server 2008 R2 Service Pack 1>= 6.1.7601.0, < 6.1.7601.25685affected
Windows Server 2008 R2 Service Pack 1 (Server Core installation)Microsoft / Windows Server 2008 R2 Service Pack 1 (Server Core installation)>= 6.1.7601.0, < 6.1.7601.25685affected
Windows Server 2008 Service Pack 2Microsoft / Windows Server 2008 Service Pack 2>= 6.0.6003.0, < 6.0.6003.21192affected
Windows Server 2008 Service Pack 2 (Server Core installation)Microsoft / Windows Server 2008 Service Pack 2 (Server Core installation)>= 6.0.6003.0, < 6.0.6003.21192affected
Windows Server 2012Microsoft / Windows Server 2012>= 6.2.9200.0, < 6.2.9200.23435affected
Windows Server 2012 R2Microsoft / Windows Server 2012 R2>= 6.3.9600.0, < 6.3.9600.20094affected
Windows Server 2012 R2 (Server Core installation)Microsoft / Windows Server 2012 R2 (Server Core installation)>= 6.3.9600.0, < 6.3.9600.20094affected
Windows Server 2012 (Server Core installation)Microsoft / Windows Server 2012 (Server Core installation)>= 6.2.9200.0, < 6.2.9200.23435affected
Windows Server 2016Microsoft / Windows Server 2016>= 10.0.14393.0, < 10.0.14393.4583affected
Windows Server 2016 (Server Core installation)Microsoft / Windows Server 2016 (Server Core installation)>= 10.0.14393.0, < 10.0.14393.4583affected
Windows Server 2019Microsoft / Windows Server 2019>= 10.0.17763.0, < 10.0.17763.2114affected
Windows Server 2019 (Server Core installation)Microsoft / Windows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.2114affected
Windows Server version 2004Microsoft / Windows Server version 2004>= 10.0.0, < 10.0.19041.1165affected
Windows Server version 20H2Microsoft / Windows Server version 20H2>= 10.0.0, < 10.0.19042.1165affected