{"id":"CVE-2026-97742","published":"2026-10-13T19:22:11.440","lastModified":"2026-10-15T21:19:27.987","description":"Stack-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-121"],"vendors":["microsoft"],"products":["365 apps","microsoft 365","office 2021","office 2024","office online server"],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97742","tags":["Patch","Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A stack-based buffer overflow in Microsoft Excel allows remote attackers to execute arbitrary code when processing malicious files, 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":"If exploited, this vulnerability could allow attackers to gain full control over affected systems, potentially leading to data breaches, lateral movement, and persistent access within enterprise networks.","remediation":"Deploy the Microsoft Office 2021 Security Update KB5043798 or Office 2024 Security Update KB5043799 immediately to all affected systems.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","excel","buffer-overflow","remote"],"model":"garnet-coder","analyzedAt":"2026-10-18T10:20:04.897Z"}}