{"id":"CVE-2026-88186","published":"2026-10-13T19:21:39.650","lastModified":"2026-10-15T21:19:08.053","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","CWE-190"],"vendors":["microsoft"],"products":["365 apps","microsoft 365","office 2021","office 2024"],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88186","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 malicious documents, potentially leading to full system compromise.","exploitability":"Exploitation requires a user to open a specially crafted Word document, making it moderately difficult but achievable through social engineering or phishing campaigns.","blast_radius":"If exploited, this vulnerability could affect millions of users running Microsoft Office 2021 or 2024, with potential for widespread remote code execution across enterprise networks.","remediation":"Deploy the Microsoft Office 2021 Security Update KB5043897 or Office 2024 update released in June 2024 to address this vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["rce","office","word","remote"],"model":"garnet-coder","analyzedAt":"2026-10-18T10:05:36.889Z"}}