CVE-2025-21219: CWE-41: Improper Resolution of Path Equivalence in Microsoft Windows 10 Version 1507
MapUrlToZone Security Feature Bypass Vulnerability
AI Analysis
Technical Summary
This vulnerability, tracked as CVE-2025-21219 and categorized under CWE-41 (Improper Resolution of Path Equivalence), affects Microsoft Windows 10 Version 1507 (build 10.0.10240.0). It allows bypassing the MapUrlToZone security feature, which is designed to determine the security zone of a URL. The improper handling of path equivalence can lead to security feature bypass, potentially allowing less restricted access to resources. Microsoft has published an official fix for this vulnerability.
Potential Impact
The vulnerability allows bypassing a security feature that maps URLs to security zones, which could lead to a security feature bypass. The impact is limited to confidentiality loss (partial information disclosure) without integrity or availability impact. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21219 to remediate this vulnerability.
CVE-2025-21219: 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, tracked as CVE-2025-21219 and categorized under CWE-41 (Improper Resolution of Path Equivalence), affects Microsoft Windows 10 Version 1507 (build 10.0.10240.0). It allows bypassing the MapUrlToZone security feature, which is designed to determine the security zone of a URL. The improper handling of path equivalence can lead to security feature bypass, potentially allowing less restricted access to resources. Microsoft has published an official fix for this vulnerability.
Potential Impact
The vulnerability allows bypassing a security feature that maps URLs to security zones, which could lead to a security feature bypass. The impact is limited to confidentiality loss (partial information disclosure) without integrity or availability impact. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as detailed in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21219 to remediate this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- microsoft
- Date Reserved
- 2024-12-05T21:43:30.771Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21219","vendor":"Microsoft"}]
Threat ID: 68c0bd4d9ed239a66badea7a
Added to database: 09/09/2025, 23:50:37 UTC
Last enriched: 06/10/2026, 09:42:54 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 124
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