cve 2026 20929

About this tag
CVE-2026-20929 is a Microsoft-identified elevation of privilege vulnerability in the Windows HTTP Protocol Stack (HTTP.sys). HTTP.sys is a kernel-mode component that handles HTTP requests for IIS and other Windows services. Because it runs in kernel mode, a successful exploit could allow an attacker to gain elevated privileges on an affected system. Microsoft has published a security advisory and recommends that administrators prioritize patching, especially for internet-facing Windows hosts. The vulnerability is listed in the Microsoft Security Update Guide with limited technical details, but the vendor's exploitability signals indicate it should be treated as a high priority for remediation.
  1. Urgent Patch for CVE-2026-20929 in HTTP.sys on Windows

    Microsoft’s security registry now lists CVE-2026-20929 as an Elevation of Privilege vulnerability in the Windows HTTP Protocol Stack (HTTP.sys), and the vendor’s published entry — together with the Security Response Center’s internal “confidence / exploitability” signals — should change how...
  2. CVE-2026-20929 Elevation of Privilege in Windows HTTP.sys: Patch Now

    Microsoft’s Security Update Guide has recorded CVE-2026-20929 as an elevated-risk elevation-of-privilege vulnerability in the Windows HTTP.sys component, and the vendor’s public entry confirms the issue exists while providing only limited technical detail at the time of publication. Background /...