{"id":"CVE-2026-97759","published":"2026-10-13T19:22:13.610","lastModified":"2026-10-15T21:19:30.007","description":"Use after free 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-416"],"vendors":["microsoft"],"products":["365 apps","microsoft 365","office 2021","office 2024"],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97759","tags":["Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A use-after-free vulnerability in Microsoft Excel allows remote attackers to execute arbitrary code when a malicious file is opened, potentially leading to full system compromise.","exploitability":"Exploitation requires a user to open a specially crafted Excel file, making it moderately difficult but achievable through social engineering or phishing campaigns.","blast_radius":"The vulnerability affects Microsoft 365 apps and Office 2021/2024, meaning a wide range of users could be impacted, potentially leading to widespread remote code execution across enterprise networks.","remediation":"Deploy the Microsoft Excel update KB5040000 or later to remediate this vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","excel","remote","office"],"model":"garnet-coder","analyzedAt":"2026-10-18T10:21:20.355Z"}}