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CVE-2021-36942

Windows LSA Spoofing Vulnerability

Published
Last modified
published
Listed in CISA KEV
Fix
Fixed in 6.1.7601.25685, 6.0.6003.21192, 6.2.9200.23435, 6.3.9600.20094, 10.0.14393.4583, and 3 more
None on Exploit-DB, Metasploit or GitHub

Summary

Microsoft Windows operating systems are affected by this vulnerability in the Local Security Authority (LSA) component, which handles security policy and authentication. An attacker who exploits it could spoof trusted identities, potentially allowing unauthorized access or elevated privileges on the affected system.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original description

Windows LSA Spoofing Vulnerability

Timeline

  1. CVE published
  2. Added to CISA KEV

    CISA has evidence of exploitation in the wild

  3. CISA remediation deadline

    Due date for US federal agencies to patch

  4. Record last updated
  5. EPSS reached 10%

    FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

  • Microsoft Windows Server 2008 R2 Service Pack 1

    From 6.1.7601.0 · fixed in 6.1.7601.25685

  • Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation)

    From 6.1.7601.0 · fixed in 6.1.7601.25685

  • Microsoft Windows Server 2008 Service Pack 2

    From 6.0.6003.0 · fixed in 6.0.6003.21192

  • Microsoft Windows Server 2008 Service Pack 2 (Server Core installation)

    From 6.0.6003.0 · fixed in 6.0.6003.21192

  • Microsoft Windows Server 2012

    From 6.2.9200.0 · fixed in 6.2.9200.23435

  • Microsoft Windows Server 2012 (Server Core installation)

    From 6.2.9200.0 · fixed in 6.2.9200.23435

  • Microsoft Windows Server 2012 R2

    From 6.3.9600.0 · fixed in 6.3.9600.20094

  • Microsoft Windows Server 2012 R2 (Server Core installation)

    From 6.3.9600.0 · fixed in 6.3.9600.20094

  • Microsoft Windows Server 2016

    From 10.0.14393.0 · fixed in 10.0.14393.4583

  • Microsoft Windows Server 2016 (Server Core installation)

    From 10.0.14393.0 · fixed in 10.0.14393.4583

  • Microsoft Windows Server 2019

    From 10.0.17763.0 · fixed in 10.0.17763.2114

  • Microsoft Windows Server 2019 (Server Core installation)

    From 10.0.17763.0 · fixed in 10.0.17763.2114

  • Microsoft Windows Server version 2004

    From 10.0.0 · fixed in 10.0.19041.1165

  • Microsoft Windows Server version 20H2

    From 10.0.0 · fixed in 10.0.19042.1165

References 1

msrc.microsoft.com