CVE-2025-21247
MEDIUMCVSS 4.3/10EPSS 2.98%
Last modified
CVE-2025-21247 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Improper resolution of path equivalence in Windows MapUrlToZone allows an unauthorized attacker to bypass a security feature over a network.. EPSS estimates a 2.98% chance of exploitation in the next 30 days.
Description
Improper resolution of path equivalence in Windows MapUrlToZone allows an unauthorized attacker to bypass a security feature over a network.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Microsoft | Windows 10 1507 | < 10.0.10240.20947 | — |
| Microsoft | Windows 10 1607 | < 10.0.14393.7876 | — |
| Microsoft | Windows 10 1809 | < 10.0.17763.7009 | — |
| Microsoft | Windows 10 21h2 | < 10.0.19044.5608 | — |
| Microsoft | Windows 10 22h2 | < 10.0.19045.5608 | — |
| Microsoft | Windows 11 22h2 | < 10.0.22621.5039 | — |
| Microsoft | Windows 11 23h2 | < 10.0.22631.5039 | — |
| Microsoft | Windows 11 24h2 | < 10.0.26100.3403 | — |
| Microsoft | Windows Server 2008 | All versions | Sp2 |
| Microsoft | Windows Server 2008 | r2 | Sp1 |
| Microsoft | Windows Server 2012 | All versions | — |
| Microsoft | Windows Server 2012 | r2 | — |
| Microsoft | Windows Server 2016 | < 10.0.14393.7876 | — |
| Microsoft | Windows Server 2019 | < 10.0.17763.7009 | — |
| Microsoft | Windows Server 2022 | < 10.0.20348.3270 | — |
| Microsoft | Windows Server 2022 23h2 | < 10.0.25398.1486 | — |
| Microsoft | Windows Server 2025 | < 10.0.26100.3403 | — |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2025-21247?
Improper resolution of path equivalence in Windows MapUrlToZone allows an unauthorized attacker to bypass a security feature over a network.
How severe is CVE-2025-21247?
CVE-2025-21247 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 2.98% probability of exploitation in the next 30 days.
How do I fix CVE-2025-21247?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2025-21247?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST