CVE-2025-21331: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Windows 10 Version 1507
Windows Installer Elevation of Privilege Vulnerability
AI Analysis
Technical Summary
CVE-2025-21331 is a Windows Installer elevation of privilege vulnerability affecting Windows 10 Version 1507 (build 10.0.10240.0). The issue arises from improper link resolution before file access, which can be exploited to escalate privileges. The vulnerability is rated with a CVSS 3.1 score of 7.3 (high severity), indicating significant impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker with limited privileges to elevate their privileges on the affected system, potentially gaining full control. The CVSS score reflects high impact on confidentiality, integrity, and availability, meaning that sensitive data could be exposed or modified, and system stability compromised.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21331 to remediate this vulnerability.
CVE-2025-21331: CWE-59: Improper Link Resolution Before File Access ('Link Following') in Microsoft Windows 10 Version 1507
Description
Windows Installer Elevation of Privilege Vulnerability
CVSS v3.1
Score 7.3high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-21331 is a Windows Installer elevation of privilege vulnerability affecting Windows 10 Version 1507 (build 10.0.10240.0). The issue arises from improper link resolution before file access, which can be exploited to escalate privileges. The vulnerability is rated with a CVSS 3.1 score of 7.3 (high severity), indicating significant impact on confidentiality, integrity, and availability. Microsoft has published an official fix to address this vulnerability.
Potential Impact
Successful exploitation of this vulnerability could allow an attacker with limited privileges to elevate their privileges on the affected system, potentially gaining full control. The CVSS score reflects high impact on confidentiality, integrity, and availability, meaning that sensitive data could be exposed or modified, and system stability compromised.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21331 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-11T00:29:48.350Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21331","vendor":"Microsoft"}]
Threat ID: 68c0bd529ed239a66badebe8
Added to database: 09/09/2025, 23:50:42 UTC
Last enriched: 06/10/2026, 09:55:20 UTC
Last updated: 07/03/2026, 08:51:21 UTC
Views: 217
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