CVE-2024-26254: 
vulnerability analysis and mitigation

Microsoft Virtual Machine Bus (VMBus) Denial of Service Vulnerability (CVE-2024-26254) was disclosed on April 9, 2024. This vulnerability affects multiple versions of Microsoft Windows operating systems including Windows 10, Windows 11, and Windows Server editions (NVD).

The vulnerability has been assigned 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. The weakness has been classified under CWE-822 (Untrusted Pointer Dereference) by Microsoft Corporation (NVD).

This vulnerability can result in a denial of service condition affecting the Virtual Machine Bus (VMBus) component. The attack vector is network-accessible, requires low attack complexity, and needs no privileges or user interaction to exploit (Microsoft Advisory).

The vulnerability is network-accessible and can be exploited without requiring any privileges or user interaction, making it relatively straightforward to exploit. The low attack complexity further increases its exploitability potential (NVD).

Microsoft has released security updates to address this vulnerability across affected systems including Windows 10 (versions 1809, 21H2, 22H2), Windows 11 (versions 21H2, 22H2, 23H2), and Windows Server (2019, 2022) installations. Users are advised to apply the relevant security updates: KB5036896, KB5036892, KB5036893, KB5036894, KB5036909, and KB5036910 (Rapid7).