Information disclosure via URL zone misclassification
Published Sep 9, 2025 · Updated Feb 20, 2026
Protection mechanism failure in Microsoft Windows MapUrlToZone allows remote attackers to bypass URL security-zone classification. MapUrlToZone classifies paths as local, intranet, Internet, or invalid, but Microsoft has not disclosed the input-handling error specific to this CVE. Exploitation requires user interaction and can expose information when a remotely supplied resource receives a more trusted zone classification.
Summary
What happened
Protection mechanism failure in Microsoft Windows MapUrlToZone allows remote attackers to bypass URL security-zone classification. MapUrlToZone classifies paths as local, intranet, Internet, or invalid, but Microsoft has not disclosed the input-handling error specific to this CVE. Exploitation requires user interaction and can expose information when a remotely supplied resource receives a more trusted zone classification.
The record
- CVE
- CVE-2025-54917
- Published
- Sep 9, 2025
- Updated
- Feb 20, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-693, T1204
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 9, 2025CVE publishedPublication date reported by the CVE source.
- Feb 20, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=10.0.10240.0 <10.0.10240.21128
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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