7.8
High
CVE-2026-21250 Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally
Description
Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server 2025 (Server Core installation) 10.0 | 10.0.26100.0 → < 10.0.26100.32370 | 10.0.26100.32370 |
| Windows 11 Version 25H2 10.0 | 10.0.26200.0 → < 10.0.26200.7840 | 10.0.26200.7840 |
| Windows Server 2022, 23H2 Edition (Server Core installation) 10.0 | 10.0.25398.0 → < 10.0.25398.2149 | 10.0.25398.2149 |
| Windows 11 Version 24H2 10.0 | 10.0.26100.0 → < 10.0.26100.7840 | 10.0.26100.7840 |
| Windows Server 2025 10.0 | 10.0.26100.0 → < 10.0.26100.32370 | 10.0.26100.32370 |
| Windows 11 version 26H1 10.0 | 10.0.28000.0 → < 10.0.28000.1575 | 10.0.28000.1575 |
References
- Windows HTTP.sys Elevation of Privilege Vulnerability msrc.microsoft.com
Timeline
- Published
- Last modified
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