CVE-2025-29971: 
vulnerability analysis and mitigation

CVE-2025-29971 is a security vulnerability discovered in Microsoft's Web Threat Defense (WTD.sys) component. The vulnerability was disclosed on May 13, 2025, and involves an out-of-bounds read issue that affects various versions of Windows 11. This security flaw has been assigned a high severity rating and impacts multiple system configurations (NVD, Wiz).

The vulnerability is categorized as an out-of-bounds read (CWE-125) affecting the Web Threat Defense system component. It has received a CVSS v3.1 base score of 7.5 (HIGH) with the vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. This scoring indicates that the vulnerability is network-accessible, requires low attack complexity, and needs no privileges or user interaction for exploitation (NVD).

When exploited, this vulnerability enables unauthorized attackers to perform denial of service attacks over a network, potentially disrupting the availability of affected systems (NVD, Wiz).

Microsoft has acknowledged the vulnerability and provided information through their Security Update Guide. The affected systems include Windows 11 versions 22H2, 23H2, and 24H2 for both ARM64 and x64 architectures (Microsoft Security).