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CVE-2026-21232 Windows HTTP.sys Elevation of Privilege Vulnerability

⚠️ Importante

Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.

Microsoft CVE-2026-21232 CVSS 7.8 2026-02-10 08:00 UTC · 2026-02-10 05:00 -03

⚠️ Importante

Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Microsoft CVE-2026-21236 CVSS 7.8 2026-02-10 08:00 UTC · 2026-02-10 05:00 -03

⚠️ Importante

Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Microsoft CVE-2026-21238 CVSS 7.8 2026-02-10 08:00 UTC · 2026-02-10 05:00 -03

⚠️ Importante

Time-of-check time-of-use (toctou) race condition in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.

Microsoft CVE-2026-21240 CVSS 7.8 2026-02-10 08:00 UTC · 2026-02-10 05:00 -03

⚠️ Importante

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Microsoft CVE-2026-21241 CVSS 7.0 2026-02-10 08:00 UTC · 2026-02-10 05:00 -03