CVE-2026-55948 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 apply the security update for this vulnerability, which is available through the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles linked in the 'Security Updates' section.