CVE-2025-27729

HIGH
2025-04-08 [email protected]
7.8
CVSS 3.1
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CVSS Vector

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

Lifecycle Timeline

2
Analysis Generated
Mar 28, 2026 - 18:35 vuln.today
CVE Published
Apr 08, 2025 - 18:16 nvd
HIGH 7.8

Tags

Use After Free Memory Corruption Microsoft Denial Of Service Windows 10 21h2 Windows 10 22h2 Windows 11 22h2 Windows 11 23h2 Windows 11 24h2 Windows Server 2025 Windows

Description

Use after free in Windows Shell allows an unauthorized attacker to execute code locally.

Analysis

Use after free in Windows Shell allows an unauthorized attacker to execute code locally. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Technical Context

This vulnerability is classified as Use After Free (CWE-416), which allows attackers to access freed memory to execute arbitrary code or crash the application. Use after free in Windows Shell allows an unauthorized attacker to execute code locally. Affected products include: Microsoft Windows 10 21H2, Microsoft Windows 10 22H2, Microsoft Windows 11 22H2, Microsoft Windows 11 23H2, Microsoft Windows 11 24H2.

Affected Products

Microsoft Windows 10 21H2, Microsoft Windows 10 22H2, Microsoft Windows 11 22H2, Microsoft Windows 11 23H2, Microsoft Windows 11 24H2.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use smart pointers or garbage-collected languages. Set pointers to NULL after freeing. Enable memory sanitizers.

Priority Score

40
Low Medium High Critical
KEV: 0
EPSS: +0.7
CVSS: +39
POC: 0

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CVE-2025-27729 vulnerability details – vuln.today
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