{"id":"CVE-2026-70287","published":"2026-10-13T19:19:48.510","lastModified":"2026-10-15T21:17:46.217","description":"Heap-based buffer overflow in Microsoft Office Word 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"],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70287","tags":["Vendor Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"A heap-based buffer overflow in Microsoft Word allows remote attackers to execute arbitrary code when processing maliciously crafted documents over a network. This vulnerability could enable attackers to gain full control of affected systems.","exploitability":"Exploitation requires a user to open a specially crafted Word document, making it moderately difficult but possible to achieve remote code execution through social engineering or phishing attacks.","blast_radius":"If exploited, this vulnerability could allow attackers to execute code on any Windows system running affected versions of Microsoft Office, potentially leading to full system compromise and lateral movement across networks.","remediation":"Deploy the Microsoft Office 2021 or Office 2024 update KB5043698 immediately, as this patch addresses the heap-based buffer overflow vulnerability in Word.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","office","word","buffer-overflow"],"model":"garnet-coder","analyzedAt":"2026-10-18T09:56:56.854Z"}}