CVE-2025-21343 — HIGH (7.5)

Q: What is CVE-2025-21343?

CVE-2025-21343 is a vulnerability with a CVSS score of 7.5 (HIGH). Windows Web Threat Defense User Service Information Disclosure Vulnerability

Q: How severe is CVE-2025-21343?

CVE-2025-21343 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2025-21343?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 11 22H2, Microsoft Windows 11 23H2, Microsoft Windows 11 24H2.

Vulnerability Description

Windows Web Threat Defense User Service Information Disclosure Vulnerability

CVSS Score

7.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Microsoft	Windows 11 22H2	< 10.0.22621.4751
Microsoft	Windows 11 23H2	< 10.0.22631.4751
Microsoft	Windows 11 24H2	< 10.0.26100.2894

Related Weaknesses (CWE)

CWE-269

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21343PatchVendor Advisory

FAQ

What is CVE-2025-21343?

CVE-2025-21343 is a vulnerability with a CVSS score of 7.5 (HIGH). Windows Web Threat Defense User Service Information Disclosure Vulnerability

How severe is CVE-2025-21343?

CVE-2025-21343 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-21343?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 11 22H2, Microsoft Windows 11 23H2, Microsoft Windows 11 24H2.