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Unrated severityNVD Advisory· Published Feb 10, 2026· Updated Apr 10, 2026

Windows HTTP.sys Elevation of Privilege Vulnerability

CVE-2026-21250

Description

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

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

6

Microsoft/Windows 11 24h2cpe-rescue
Range: 10.0.26100.0
Microsoft/Windows 11 25h2cpe-rescue
Range: 10.0.26200.0
Microsoft/Windows 11 26h1cpe-rescue
Range: 10.0.28000.0
Microsoft/Windows Server 2022, 23H2 Edition (Server Core installation)v5
Range: 10.0.25398.0
Microsoft/Windows Server 2025cpe-rescue
Range: 10.0.26100.0
Microsoft/Windows Server 2025 (Server Core installation)v5
Range: 10.0.26100.0

Patches

Vulnerability mechanics

References

1

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21250mitrevendor-advisorypatch

News mentions

0

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