Vulnerability in Microsoft Windows 10 Version 1507
CVE-2025-21247
Improper resolution of path equivalence in Windows MapUrlToZone allows an unauthorized attacker to bypass a security feature over a network.
EPSS: 0.003 (50.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C.
Affected products
- Microsoft Windows 10 Version 1507 — versions 10.0.10240.0
- Microsoft Windows 10 Version 1607 — versions 10.0.14393.0
- Microsoft Windows 10 Version 1809 — versions 10.0.17763.0
- Microsoft Windows 10 Version 21h2 — versions 10.0.19044.0
- Microsoft Windows 10 Version 22h2 — versions 10.0.19045.0
- Microsoft Windows 11 Version 22h2 — versions 10.0.22621.0
- Microsoft Windows 11 Version 22h3 — versions 10.0.22631.0
- Microsoft Windows 11 Version 23h2 — versions 10.0.22631.0
- Microsoft Windows 11 Version 24h2 — versions 10.0.26100.0
- Microsoft Windows Server 2008 R2 Service Pack 1 — versions 6.1.7601.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- MapUrlToZone Security Feature Bypass Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2025-21247?
- CVE-2025-21247 is a medium-severity vulnerability in Microsoft Windows 10 Version 1507, classified under CWE-41. CVSS score: 4.3/10. Published 2025-03-11.
- How severe is CVE-2025-21247?
- Medium severity. CVSS v3 base score is 4.3 out of 10.
- Is CVE-2025-21247 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.