High MSRC-CVE-2026-33096 1 CVE

HTTP.sys Denial of Service Vulnerability

Published Apr 14, 2026 · Updated Apr 14, 2026

Vendor: Microsoft

Summary

Impact: Denial of Service. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

Security updates
10.0.28000.1836 — https://support.microsoft.com/help/5083768
10.0.20348.5020 — https://support.microsoft.com/help/5082142
10.0.26100.32690 — https://support.microsoft.com/help/5082063
10.0.26200.8246 — https://support.microsoft.com/help/5083769
10.0.22631.6936 — https://support.microsoft.com/help/5082052
10.0.25398.2274 — https://support.microsoft.com/help/5082060

Vulnerabilities 1

High 7.5

CVE-2026-33096

HTTP.sys Denial of Service Vulnerability

Out-of-bounds read in Windows HTTP.sys allows an unauthorized attacker to deny service over a network.

Microsoft Windows Server 2022 Windows Server 2025 Windows Server 2025 (Server Core installation) Windows

Apr 14, 2026

Revision history

2026-04-14 #1
Information published.

References

CVE-2026-33096 HTTP.sys Denial of Service Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33096
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss