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CVE-2024-43522: Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-10-08 · updated 2026-08-19
• Weakness: CWE-122

Description

Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 11: before 10.0.22621.4317 — fixed in 10.0.22621.4317
• Microsoft Windows 11: before 10.0.22631.4317 — fixed in 10.0.22631.4317
• Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.4317 — fixed in 10.0.22621.4317
• Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.4317 — fixed in 10.0.22631.4317
• Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.4317 — fixed in 10.0.22631.4317

How to fix

Upgrade to a fixed version: Microsoft Windows 11 10.0.22621.4317; Microsoft Windows 11 10.0.22631.4317; Microsoft Windows 11 10.0.22621.4317; Microsoft Windows 11 version 22H3 10.0.22631.4317; Microsoft Windows 11 10.0.22631.4317. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43522

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