{"id":"CVE-2026-97755","published":"2026-10-13T19:22:13.107","lastModified":"2026-10-15T21:19:29.517","description":"Out-of-bounds read 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-125"],"vendors":["microsoft"],"products":["365 apps","microsoft 365","office 2021","office 2024","office online server","sharepoint server"],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97755","tags":["Patch","Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A memory safety flaw in Microsoft Excel allows attackers to read beyond allocated memory boundaries, potentially leading to arbitrary code execution when opening malicious files over a network.","exploitability":"Exploitation requires a user to open a specially crafted Excel file from a remote location, making it moderately difficult but possible with social engineering or compromised web applications.","blast_radius":"The vulnerability affects all major Microsoft Office versions including Office 2021, Office 2024, and SharePoint Server, potentially impacting thousands of users across enterprise networks.","remediation":"Deploy the Microsoft Excel update KB5043487 or later to fix the out-of-bounds read vulnerability in Excel.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","memory-safety","excel","network"],"model":"garnet-coder","analyzedAt":"2026-10-18T10:20:57.638Z"}}