What’s Vulnerable › Vulnerabilities

CVE-2022-35838: HTTP V3 Denial of Service Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-09-13 · updated 2026-06-17

Description

HTTP V3 Denial of Service Vulnerability

Affected products

• Microsoft Windows 11 version 21H2: all versions
• Microsoft Windows Server 2022: all versions
• Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.978 — fixed in 10.0.22000.978
• Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.1006 — fixed in 10.0.20348.1006

How to fix

Upgrade to a fixed version: Microsoft Windows 11 21H2 10.0.22000.978; Microsoft Windows Server 2022 10.0.20348.1006. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-35838
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-35838

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