CVE-2025-29963: 
vulnerability analysis and mitigation

A heap-based buffer overflow vulnerability (CVE-2025-29963) was discovered in Windows Media and disclosed on May 13, 2025. The vulnerability affects multiple Windows operating systems including Windows 10, Windows 11, and Windows Server versions, allowing unauthorized attackers to execute malicious code over a network (NVD, Wiz).

The vulnerability is classified as a heap-based buffer overflow (CWE-122) and out-of-bounds write (CWE-787) with a CVSS v3.1 base score of 8.8 (HIGH). The vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) indicates that the vulnerability is exploitable over the network, requires low attack complexity, needs no privileges, but does require user interaction. Affected systems include Windows 10 (versions 1809, 21H2, 22H2), Windows 11 (versions 22H2, 23H2, 24H2), and Windows Server (versions 2019, 2022, 2025) (NVD, Wiz).

The vulnerability poses a severe security risk as it allows unauthorized attackers to execute arbitrary code over a network. The CVSS scoring indicates high impacts on confidentiality, integrity, and availability of the affected systems (NVD, Wiz).

Microsoft has acknowledged the vulnerability and provided information through their Security Response Center. Users should monitor the Microsoft Security Response Center for patch availability and apply security updates when released (Microsoft Advisory).