Microsoft Excel Heap-Based Buffer Overflow Vulnerability Allowing Local Code Execution

A heap-based buffer overflow vulnerability has been identified in Microsoft Office Excel. This vulnerability allows an unauthorized attacker to execute code locally. It affects several versions of Excel, including the 2016 32-bit and 64-bit editions, as well as Microsoft Office LTSC for Mac 2021 and 2024. Additionally, it impacts Microsoft 365 Apps for Enterprise for both 32-bit and 64-bit systems.

Impact

Exploitation of this vulnerability could lead to unauthorized local code execution.

Remediation

Users can download the security update for this vulnerability through the Microsoft Update Catalog. For Microsoft Office LTSC for Mac 2021 and 2024, security updates will be released as soon as possible, and customers will be notified via a revision to this CVE information.