This vulnerability (CVE-2026-32198) involves a use-after-free condition in Microsoft Office Excel as part of Microsoft 365 Apps for Enterprise. Exploitation could enable an unauthorized attacker to execute arbitrary code locally. The CVSS 3.1 vector indicates local attack vector with low attack complexity, no privileges required, user interaction required, and high impact on confidentiality, integrity, and availability. Microsoft has issued an official fix and manages remediation for this cloud service. No active exploitation has been reported.

Successful exploitation allows an unauthorized attacker to execute code locally, potentially leading to full compromise of the affected system's confidentiality, integrity, and availability. The vulnerability is rated high severity (CVSS 7.8). No known exploits in the wild have been reported.

An official fix is available from Microsoft. Since this is a cloud-hosted service, Microsoft manages remediation server-side. Users and administrators should ensure their Microsoft 365 Apps for Enterprise installations are updated according to Microsoft's guidance. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-32198 for detailed patching instructions.