CVE-2026-25178

HIGH
2026-03-10 [email protected]
7.0
CVSS 3.1
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CVSS Vector

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

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Mar 10, 2026 - 18:18 nvd
HIGH 7.0

Tags

Use After Free Microsoft Denial Of Service Memory Corruption Windows 11 26h1 Windows 11 24h2 Windows Server 2016 Windows 11 25h2 Windows 10 22h2 Windows Server 2022 Windows 10 21h2 Windows Server 2025 Windows 11 23h2 Windows Server 2019 Windows 10 1809 Windows Server 2022 23h2 Windows 10 1607 Windows Server 2012 Windows

Description

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Analysis

Windows Ancillary Function Driver for WinSock (AFD) in Windows 11 versions 24h2 and 26h1 contains a use-after-free vulnerability (CWE-416) that allows authenticated local attackers to escalate privileges through memory corruption. An attacker with local access could exploit this flaw to gain elevated system permissions, though no official patch is currently available.

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Remediation

Within 24 hours: Inventory all Windows systems running affected versions and assess exposure scope; implement network segmentation to limit lateral movement from compromised accounts. Within 7 days: Deploy monitoring rules to detect suspicious privilege escalation attempts; restrict local administrative access to essential personnel only. …

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Priority Score

35
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +35
POC: 0

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CVE-2026-25178 vulnerability details – vuln.today
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