CVE-2026-21232

HIGH
2026-02-10 [email protected]
7.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 22:02 vuln.today
CVE Published
Feb 10, 2026 - 18:16 nvd
HIGH 7.8

Tags

Windows Windows 11 25h2 Windows Server 2022 23h2 Windows 11 24h2 Windows Server 2025 Windows 11 23h2 Microsoft

Description

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

Analysis

Windows HTTP.sys contains an untrusted pointer dereference vulnerability that enables authenticated local users to escalate privileges on Windows 11 and Windows Server 2022/2025 systems. An attacker with valid credentials can exploit this flaw to gain elevated access without user interaction. …

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Remediation

Within 24 hours: Inventory all Windows systems running HTTP.sys and assess exposure in your environment; disable HTTP.sys if not required for operations. Within 7 days: Implement network segmentation to restrict local access to HTTP.sys-dependent services; enforce principle of least privilege on user accounts. …

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Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +39
POC: 0

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CVE-2026-21232 vulnerability details – vuln.today
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