{"id":"CVE-2026-97765","published":"2026-10-13T19:22:14.240","lastModified":"2026-10-15T21:19:30.600","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-2026-97765","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 maliciously crafted 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 and requires an attacker to deliver a specially crafted Excel file to a victim who has Excel open or opens the file, with no user interaction required once the file is opened.","blast_radius":"The vulnerability affects all Microsoft 365 apps, Office 2021, Office 2024, and Office Online Server, potentially impacting thousands of users across organizations that use these applications for document processing.","remediation":"Deploy the Microsoft Office 2021 version 2408 or later, or Office 2024 version 2408 or later, as these versions contain the fix for CVE-2026-97765.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","excel","remote","office"],"model":"garnet-coder","analyzedAt":"2026-10-18T10:21:42.749Z"}}