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CVE-2022-26925: Microsoft Windows LSA Spoofing Vulnerability

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2022-07-01
• EPSS: 10.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-05-10 · updated 2026-06-17
• Weakness: CWE-306

Description

Windows LSA Spoofing Vulnerability

Affected products

• Microsoft Windows 10 Version 1507: before 10.0.10240.19297 — fixed in 10.0.10240.19297
• Microsoft Windows 10 1607: before 10.0.14393.5125 — fixed in 10.0.14393.5125
• Microsoft Windows 10: before 10.0.17763.2928 — fixed in 10.0.17763.2928
• Microsoft Windows 10 1909: before 10.0.18363.2274 — fixed in 10.0.18363.2274
• Microsoft Windows 10 20H2: before 10.0.19042.1706 — fixed in 10.0.19042.1706
• Microsoft Windows 10 21H1: before 10.0.19043.1706 — fixed in 10.0.19043.1706
• Microsoft Windows 10: before 10.0.19044.1706 — fixed in 10.0.19044.1706
• Microsoft Windows 11 21H2: before 10.0.22000.675 — fixed in 10.0.22000.675
• Microsoft Windows 7: all versions
• Microsoft Windows 8.1: all versions
• Microsoft Windows RT 8.1: all versions
• Microsoft Windows Server 2008: r2-sp1
• Microsoft Windows Server 2012: r2
• Microsoft Windows Server 2016: before 10.0.14393.5125 — fixed in 10.0.14393.5125
• Microsoft Windows Server 2019: before 10.0.17763.2928 — fixed in 10.0.17763.2928
• Microsoft Windows Server 2022: before 10.0.20348.707 — fixed in 10.0.20348.707
• Microsoft Windows Server 20H2: before 10.0.19042.1706 — fixed in 10.0.19042.1706

How to fix

Upgrade to a fixed version: Microsoft Windows 10 Version 1507 10.0.10240.19297; Microsoft Windows 10 1607 10.0.14393.5125; Microsoft Windows 10 10.0.17763.2928; Microsoft Windows 10 1909 10.0.18363.2274; Microsoft Windows 10 20H2 10.0.19042.1706; Microsoft Windows 10 21H1 10.0.19043.1706; Microsoft Windows 10 10.0.19044.1706; Microsoft Windows 11 21H2 10.0.22000.675; Microsoft Windows Server 2016 10.0.14393.5125; Microsoft Windows Server 2019 10.0.17763.2928; Microsoft Windows Server 2022 10.0.20348.707; Microsoft Windows Server 20H2 10.0.19042.1706. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-26925
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-26925
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26925

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