{"id":"CVE-2026-105718","published":"2026-10-13T19:17:59.750","lastModified":"2026-10-15T21:17:05.700","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-20","CWE-125"],"vendors":["microsoft"],"products":["365 apps","microsoft 365","office 2021","office 2024","office online server"],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105718","tags":["Patch","Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A Microsoft Excel out-of-bounds read vulnerability allows remote code execution when processing malicious files, potentially enabling attackers to run arbitrary code on affected systems.","exploitability":"Exploitation requires a user to open a specially crafted Excel file, making it moderately difficult but achievable through social engineering or phishing attacks.","blast_radius":"The vulnerability affects all Microsoft 365 apps and Office versions including 2021 and 2024, potentially impacting thousands of users across an organization.","remediation":"Deploy the Microsoft Office 2024 update KB5040000 or later to address this vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","excel","remote","office"],"model":"garnet-coder","analyzedAt":"2026-10-17T08:54:35.186Z"}}