Is CVE-2025-21219 in the CISA KEV catalog?

No. CVE-2025-21219 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-21219?

CVE-2025-21219 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2025-21219?

CVE-2025-21219 has an EPSS score of 2.91% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-21219?

Install KB5050013 for Windows 10. Fixes are available for 17 affected products.

CVE & CISA-KEV Catalog

CVE-2025-21219

MEDIUMEPSS 85th pctl

4.3

CVSS v3

NVD

Description

MapUrlToZone Security Feature Bypass Vulnerability

CWE-41

How to fix

Remediation Available

Windows 10Windows

Install:KB5050013Microsoft

Windows 10 Version 1607Windows

Install:KB5049993Microsoft

Windows 10 Version 1809Windows

Install:KB5050008Microsoft

Windows 10 Version 21H2Windows

Install:KB5049981Microsoft

Windows 10 Version 22H2Windows

Install:KB5049981Microsoft

Windows 11 Version 22H2Windows

Install:KB5050021Microsoft

Windows 11 Version 23H2Windows

Install:KB5050021Microsoft

Windows 11 Version 24H2Windows

Install:KB5050009Microsoft

Windows Server 2016Windows

Install:KB5049993Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5049993Microsoft

Windows Server 2019Windows

Install:KB5050008Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5050008Microsoft

Windows Server 2022Windows

Install:KB5049983Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5049983Microsoft

Windows Server 2022, 23H2 Edition (Server Core installation)Windows

Install:KB5049984Microsoft

Windows Server 2025Windows

Install:KB5050009Microsoft

Windows Server 2025 (Server Core installation)Windows

Install:KB5050009Microsoft

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Exploit Intelligence

2.91%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Patch1

msrc.microsoft.com

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Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-01-27.