CVE-2026-47642 Details

A use-after-free vulnerability has been identified in Microsoft Office Excel. This issue allows an unauthorized attacker to execute code locally on the affected system. The vulnerability arises from improper memory management, which can be exploited by manipulating certain objects in memory.

Users can download the security update for this vulnerability through the Microsoft Update Catalog. For Microsoft Office LTSC for Mac 2021 and 2024, the security update is also available via the Microsoft AutoUpdate tool. Instructions for applying the update can be found in the Microsoft 365 Apps Security Updates article on the Microsoft Support website.