EUVD-2025-20638

| CVE-2025-49686 HIGH
2025-07-08 [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

3
Analysis Generated
Mar 16, 2026 - 04:21 vuln.today
EUVD ID Assigned
Mar 16, 2026 - 04:21 euvd
EUVD-2025-20638
CVE Published
Jul 08, 2025 - 17:15 nvd
HIGH 7.8

Tags

Microsoft Null Pointer Dereference Denial Of Service Windows Server 2022 Windows Server 2019 Windows 11 22h2 Windows 10 1507 Windows Server 2025 Windows 11 23h2 Windows Server 2008 Windows 10 22h2 Windows 10 1607 Windows Server 2016 Windows 10 21h2 Windows Server 2012 Windows 10 1809 Windows Server 2022 23h2 Windows 11 24h2 Windows

Description

Null pointer dereference in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

Analysis

Null pointer dereference in Windows TCP/IP allows an authorized attacker to elevate privileges locally.

Technical Context

A NULL pointer dereference occurs when the application attempts to use a pointer that has not been initialized or has been set to NULL.

Affected Products

Affected products: Microsoft Windows 10 1507, Microsoft Windows 10 1607, Microsoft Windows 10 1809

Remediation

Add NULL checks before pointer dereference operations. Use static analysis to identify potential NULL pointer issues. Enable compiler warnings.

Priority Score

39
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +39
POC: 0

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EUVD-2025-20638 vulnerability details – vuln.today
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