Denial of Service Vulnerability in Web Threat Defense by Microsoft
CVE-2025-29971

7.5HIGH

Key Information:

Vendor

Microsoft
Status
Windows 11 Version 22h2
Windows 11 Version 22h3
Windows 11 Version 23h2
Windows 11 Version 24h2
Vendor
CVE Published:
13 May 2025

What is CVE-2025-29971?

An out-of-bounds read issue in Web Threat Defense (WTD.sys) enables unauthorized attackers to exploit the vulnerability, potentially leading to service denial over a network. This flaw can compromise the availability of services, making it vital for organizations to address this vulnerability promptly. For more details and guidance, refer to Microsoft's advisory.

Affected Version(s)

Windows 11 version 22H2 ARM64-based Systems 10.0.22621.0 < 10.0.22621.5335

Windows 11 version 22H3 ARM64-based Systems 10.0.22631.0 < 10.0.22631.5335

Windows 11 Version 23H2 x64-based Systems 10.0.22631.0 < 10.0.22631.5335

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

EPSS Score

9% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.