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CVE-2026-20941: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Windows 11 Version 24H2

0
High
VulnerabilityCVE-2026-20941cvecve-2026-20941cwe-59
Published: 01/13/2026 (01/13/2026, 17:57:10 UTC)
Source: CVE Database V5
Vendor/Project: Microsoft
Product: Windows 11 Version 24H2

Description

Improper link resolution before file access ('link following') in Host Process for Windows Tasks allows an authorized attacker to elevate privileges locally.

CVSS v3.1

Score 7.8high

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

Affected software

Microsoft

Windows 11 Version 24H2

Affected versions
>=10.0.26100.0 <10.0.26100.7623

Microsoft

Windows 11 Version 25H2

Affected versions
>=10.0.26200.0 <10.0.26200.7623

Microsoft

Windows Server 2025

Affected versions
>=10.0.26100.0 <10.0.26100.32230

Microsoft

Windows Server 2025 (Server Core installation)

Affected versions
>=10.0.26100.0 <10.0.26100.32230

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 07/30/2026, 23:38:20 UTC

Technical Analysis

This vulnerability (CWE-59) in Windows 11 Version 24H2 (build 10.0.26100.0) occurs due to improper link resolution before file access in the Host Process for Windows Tasks. An authorized attacker with local access can leverage this flaw to elevate their privileges on the affected system. The CVSS v3.1 base score is 7.8, indicating high severity, with impact on confidentiality, integrity, and availability. Microsoft has released an official fix to remediate this issue as documented in their security update guide.

Potential Impact

Successful exploitation allows a local authorized attacker to elevate privileges, potentially gaining higher system rights. This can lead to full system compromise affecting confidentiality, integrity, and availability of the system.

Mitigation Recommendations

An official fix is available from Microsoft. It is strongly recommended to apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20941 to remediate this vulnerability.

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Technical Details

Data Version
5.2
Assigner Short Name
microsoft
Date Reserved
2025-12-04T20:04:16.338Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
official-fix
Vendor Advisory Urls
[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20941","vendor":"Microsoft"}]

Threat ID: 69668ae4a60475309f9ae208

Added to database: 01/13/2026, 18:11:48 UTC

Last enriched: 07/30/2026, 23:38:20 UTC

Last updated: 09/10/2026, 22:25:38 UTC

Views: 189

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