CVE-2024-43504: 
vulnerability analysis and mitigation

Microsoft Excel Remote Code Execution Vulnerability (CVE-2024-43504) was disclosed on October 8, 2024. This vulnerability affects multiple Microsoft products including Microsoft Excel 2016, Microsoft Office 2019, Microsoft 365 Apps for Enterprise, and Microsoft Office LTSC 2021 (NVD).

The vulnerability has been assigned a CVSS v3.1 base score of 7.8 (High), with the following vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. This indicates that the vulnerability requires local access and user interaction, but no privileges, while potentially impacting confidentiality, integrity, and availability at high levels. The vulnerability has been classified as CWE-416 (Use After Free) (NVD).

If successfully exploited, this vulnerability could allow an attacker to execute arbitrary code with the same privileges as the compromised user. The high CVSS impact scores for confidentiality, integrity, and availability (all rated as High) indicate that successful exploitation could result in significant system compromise (NVD).

Microsoft has released security updates to address this vulnerability. Users are advised to apply the latest security updates through Microsoft Update or by downloading the standalone update package. For Excel 2016, security update 5002643 is available for both 32-bit and 64-bit versions (Microsoft Support).