{"id":"CVE-2026-70291","aliases":[],"title":"Microsoft Office Outlook Remote Code Execution Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","products":[{"vendor":"Microsoft","name":"Microsoft 365 Apps for Enterprise","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"16.0.1","status":"affected","lessThan":"https://aka.ms/OfficeSecurityReleases","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70291"},{"vendor":"Microsoft","name":"Microsoft Office 365 for Mac","platforms":[],"versions":[{"version":"1.0.0","status":"affected","lessThan":"16.114.26101123","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70291"},{"vendor":"Microsoft","name":"Microsoft Office LTSC 2021","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"16.0.1","status":"affected","lessThan":"16.0.14334.20974","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70291"},{"vendor":"Microsoft","name":"Microsoft Office LTSC 2024","platforms":["32-bit Systems","x64-based Systems"],"versions":[{"version":"16.0.0","status":"affected","lessThan":"16.0.17932.21056","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70291"},{"vendor":"Microsoft","name":"Microsoft Office LTSC for Mac 2021","platforms":[],"versions":[{"version":"16.0.1","status":"affected","lessThan":"16.114.26101123","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70291"},{"vendor":"Microsoft","name":"Microsoft Office LTSC for Mac 2024","platforms":[],"versions":[{"version":"16.0.0","status":"affected","lessThan":"16.114.26101123","versionType":"custom"}],"source":"microsoft","url":"https://www.cve.org/CVERecord?id=CVE-2026-70291"}],"remediation":[],"description":"Heap-based buffer overflow in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.","severity":"critical","score":9.8,"published":"2026-10-13T19:00:28.150Z","modified":"2026-10-27T21:30:00.092Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70291"],"sources":[{"name":"CVE","id":"CVE-2026-70291","modified":"2026-10-27T21:30:00.092Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-70291"}],"assessments":[{"source":"microsoft","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","score":9.8}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T15:40:31.878Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}