CVE-2026-21232

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

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21232	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:microsoft:windows_11_23h2:::::::arm64:*
	cpe:2.3:o:microsoft:windows_11_23h2:::::::x64:*
	cpe:2.3:o:microsoft:windows_11_24h2:::::::arm64:*
	cpe:2.3:o:microsoft:windows_11_24h2:::::::x64:*
	cpe:2.3:o:microsoft:windows_11_25h2:::::::arm64:*
	cpe:2.3:o:microsoft:windows_11_25h2:::::::x64:*
	cpe:2.3:o:microsoft:windows_server_2022_23h2::::::::
	cpe:2.3:o:microsoft:windows_server_2025::::::::

History

11 Feb 2026, 21:12

Type	Values Removed	Values Added
First Time		Microsoft Microsoft windows 11 23h2 Microsoft windows 11 24h2 Microsoft windows 11 25h2 Microsoft windows Server 2025 Microsoft windows Server 2022 23h2
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21232 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21232 - Vendor Advisory
CPE		cpe:2.3:o:microsoft:windows_11_25h2:::::::x64:* cpe:2.3:o:microsoft:windows_11_24h2:::::::x64:* cpe:2.3:o:microsoft:windows_server_2022_23h2:::::::: cpe:2.3:o:microsoft:windows_11_24h2:::::::arm64:* cpe:2.3:o:microsoft:windows_server_2025:::::::: cpe:2.3:o:microsoft:windows_11_23h2:::::::x64:* cpe:2.3:o:microsoft:windows_11_25h2:::::::arm64:* cpe:2.3:o:microsoft:windows_11_23h2:::::::arm64:*

10 Feb 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-10 18:16

Updated : 2026-02-11 21:12

NVD link : CVE-2026-21232

Mitre link : CVE-2026-21232

CVE.ORG link : CVE-2026-21232

JSON object : View

Products Affected

microsoft

windows_server_2025
windows_11_24h2
windows_11_23h2
windows_11_25h2
windows_server_2022_23h2

CWE

CWE-822

Untrusted Pointer Dereference

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