cve-2026-105718

CVE-2026-105718 is a Critical-rated Microsoft Excel remote code execution vulnerability tracked here on WindowsForum.com. According to the tagged discussion, the flaw is an out-of-bounds read in Microsoft Office Excel that could let an unauthorized attacker execute code over a network. Microsoft's fixes cover enterprise Office applications, Mac editions, and Office Online Server. The thread notes this is not a Preview Pane attack: an attacker must send a malicious Office file and persuade the recipient to open it. For administrators, the practical takeaway is to match each installed Office product to its specific remediation rather than treating the whole estate as one interchangeable update target.