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CVE-2024-38148: Windows Secure Channel Denial of Service Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 31.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-08-13 · updated 2026-06-17
• Weakness: CWE-125

Description

Windows Secure Channel Denial of Service Vulnerability

Affected products

• Microsoft Windows 11 21H2: before 10.0.22000.3147 — fixed in 10.0.22000.3147
• Microsoft Windows 11: before 10.0.22621.4037 — fixed in 10.0.22621.4037
• Microsoft Windows 11: before 10.0.22631.4037 — fixed in 10.0.22631.4037
• Microsoft Windows 11: before 10.0.26100.1457 — fixed in 10.0.26100.1457
• Microsoft Windows Server 2022: before 10.0.20348.2655 — fixed in 10.0.20348.2655
• Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.1085 — fixed in 10.0.25398.1085
• Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.3147 — fixed in 10.0.22000.3147
• Microsoft Windows 11: from 10.0.22621.0 before 10.0.22621.4037 — fixed in 10.0.22621.4037
• Microsoft Windows 11 version 22H3: from 10.0.22631.0 before 10.0.22631.4037 — fixed in 10.0.22631.4037
• Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.4037 — fixed in 10.0.22631.4037
• Microsoft Windows 11: from 10.0.26100.0 before 10.0.26100.1457 — fixed in 10.0.26100.1457
• Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.2655 — fixed in 10.0.20348.2655
• Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): from 10.0.25398.0 before 10.0.25398.1085 — fixed in 10.0.25398.1085

How to fix

Upgrade to a fixed version: Microsoft Windows 11 21H2 10.0.22000.3147; Microsoft Windows 11 10.0.22621.4037; Microsoft Windows 11 10.0.22631.4037; Microsoft Windows 11 10.0.26100.1457; Microsoft Windows Server 2022 10.0.20348.2655; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1085; Microsoft Windows 11 21H2 10.0.22000.3147; Microsoft Windows 11 10.0.22621.4037; Microsoft Windows 11 version 22H3 10.0.22631.4037; Microsoft Windows 11 10.0.22631.4037; Microsoft Windows 11 10.0.26100.1457; Microsoft Windows Server 2022 10.0.20348.2655. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-38148

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