CVE-2025-21329: CWE-41: Improper Resolution of Path Equivalence in Microsoft Windows 10 Version 1507
MapUrlToZone Security Feature Bypass Vulnerability
AI Analysis
Technical Summary
This vulnerability (CVE-2025-21329) affects Microsoft Windows 10 Version 1507 (build 10.0.10240.0). It is classified under CWE-41, which concerns improper resolution of path equivalence. The issue specifically involves the MapUrlToZone security feature, which can be bypassed due to this flaw. The CVSS v3.1 base score is 4.3 (medium severity), with an attack vector of network, low attack complexity, no privileges required, user interaction required, and impact limited to confidentiality. Microsoft has published an official fix for this vulnerability as indicated in their advisory.
Potential Impact
The vulnerability allows bypassing the MapUrlToZone security feature, which may lead to limited confidentiality impact. There is no impact on integrity or availability. Exploitation requires user interaction but no privileges, and the attack can be performed remotely over the network. No known exploits are currently reported in the wild.
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-2025-21329 to remediate this vulnerability.
CVE-2025-21329: CWE-41: Improper Resolution of Path Equivalence in Microsoft Windows 10 Version 1507
Description
MapUrlToZone Security Feature Bypass Vulnerability
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2025-21329) affects Microsoft Windows 10 Version 1507 (build 10.0.10240.0). It is classified under CWE-41, which concerns improper resolution of path equivalence. The issue specifically involves the MapUrlToZone security feature, which can be bypassed due to this flaw. The CVSS v3.1 base score is 4.3 (medium severity), with an attack vector of network, low attack complexity, no privileges required, user interaction required, and impact limited to confidentiality. Microsoft has published an official fix for this vulnerability as indicated in their advisory.
Potential Impact
The vulnerability allows bypassing the MapUrlToZone security feature, which may lead to limited confidentiality impact. There is no impact on integrity or availability. Exploitation requires user interaction but no privileges, and the attack can be performed remotely over the network. No known exploits are currently reported in the wild.
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-2025-21329 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-11T00:29:48.349Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21329","vendor":"Microsoft"}]
Threat ID: 68c0bd529ed239a66badebe2
Added to database: 09/09/2025, 23:50:42 UTC
Last enriched: 06/10/2026, 09:55:09 UTC
Last updated: 07/03/2026, 08:51:21 UTC
Views: 274
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