Microsoft HTTP.sys Remote Code Execution Vulnerability

Microsoft HTTP protocol stack (HTTP.sys) contains a vulnerability that allows for remote code execution.

Published 21 Sep 2026Updated 21 Sep 2026657 sources
CVSS 10.0 ✓ VERIFIED REFERENCE△ CISA KEV

Source timeline

Discovered through CISA Known Exploited VulnerabilitiesView source ↗
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Added to CISA Known Exploited Vulnerabilities catalogView source ↗
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Added to CISA Known Exploited Vulnerabilities catalogView source ↗
Added to CISA Known Exploited Vulnerabilities catalogView source ↗
Added to CISA Known Exploited Vulnerabilities catalogView source ↗
Added to CISA Known Exploited Vulnerabilities catalogView source ↗