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Windows 10 21h2 CVE-2025-26675

HIGH
Out-of-bounds Read (CWE-125)
2025-04-08 secure@microsoft.com
Information Disclosure Microsoft Buffer Overflow Windows 10 21h2 Windows 10 22h2 Windows 11 22h2 Windows 11 23h2 Windows 11 24h2 Windows Server 2022 Windows Server 2022 23h2 Windows Server 2025 Windows
7.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
7.8 HIGH
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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 28, 2026 - 18:35 vuln.today
CVE Published
Apr 08, 2025 - 18:15 nvd
HIGH 7.8

DescriptionCVE.org

Out-of-bounds read in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.

AnalysisAI

Out-of-bounds read in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.

Technical ContextAI

This vulnerability is classified as Out-of-bounds Read (CWE-125), which allows attackers to read data from memory outside the intended buffer boundaries. Out-of-bounds read in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally. Affected products include: Microsoft Windows 10 21H2, Microsoft Windows 10 22H2, Microsoft Windows 11 22H2, Microsoft Windows 11 23H2, Microsoft Windows 11 24H2.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate array indices and buffer lengths. Use memory-safe languages. Enable AddressSanitizer during testing.

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CVE-2025-26675 vulnerability details – vuln.today
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