{"id":"CVE-2026-97768","published":"2026-10-13T19:22:14.617","lastModified":"2026-10-15T21:19:30.980","description":"Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.","cvssScore":8.8,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-122"],"vendors":["microsoft"],"products":["365 apps","microsoft 365","office 2021","office 2024","office online server"],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97768","tags":["Patch","Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A heap-based buffer overflow in Microsoft Office Excel allows remote attackers to execute arbitrary code when processing malicious Excel files. This vulnerability is particularly dangerous because it can be triggered over a network without user interaction, making it ideal for remote exploitation.","exploitability":"Exploitation is moderately difficult as it requires crafting a malicious Excel file that triggers the buffer overflow, but once triggered, it provides high privilege code execution with minimal preconditions.","blast_radius":"The vulnerability affects all major Microsoft 365 and Office versions, making it highly impactful across enterprise environments where Excel files are commonly shared and opened.","remediation":"Deploy the Microsoft Office 2021 version 2408 or later, or Microsoft Office 2024 version 2408 or later, as these contain the necessary security patches to address this heap-based buffer overflow vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","excel","remote-exploitation","buffer-overflow"],"model":"garnet-coder","analyzedAt":"2026-10-18T10:21:58.320Z"}}