CVE-2026-21232
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Untrusted Pointer Dereference in Windows HTTP.sys Elevates Privileges

Publication date: 2026-02-10

Last updated on: 2026-02-11

Assigner: Microsoft Corporation

Description
Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
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Meta Information
Published
2026-02-10
Last Modified
2026-02-11
Generated
2026-06-16
AI Q&A
2026-02-10
EPSS Evaluated
2026-06-15
NVD
CVE-2026-21232
EUVD
EUVD-2026-7315
Affected Vendors & Products
Showing 8 associated CPEs
Vendor Product Version / Range
microsoft windows_server_2025 to 10.0.26100.32313 (exc)
microsoft windows_11_24h2 to 10.0.26100.7781 (exc)
microsoft windows_11_24h2 to 10.0.26100.7781 (exc)
microsoft windows_11_23h2 to 10.0.22631.6649 (exc)
microsoft windows_11_23h2 to 10.0.22631.6649 (exc)
microsoft windows_11_25h2 to 10.0.26200.7781 (exc)
microsoft windows_11_25h2 to 10.0.26200.7781 (exc)
microsoft windows_server_2022_23h2 to 10.0.25398.2149 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-822 The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
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Executive Summary

This vulnerability is an untrusted pointer dereference in Windows HTTP.sys. It allows an authorized attacker to elevate their privileges locally on the affected system.

Impact Analysis

The impact of this vulnerability is an elevation of privilege, which means an attacker with some level of access can gain higher privileges than intended. This can lead to full control over the affected system, compromising confidentiality, integrity, and availability.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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