{"id":"CVE-2026-102858","aliases":[],"title":"Microsoft Office OneNote Remote Code Execution Vulnerability","titleSource":"microsoft","descriptionSource":"microsoft","products":[{"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-2026-102858"},{"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-2026-102858"},{"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-2026-102858"}],"remediation":[],"description":"Heap-based buffer overflow in Microsoft Office OneNote allows an unauthorized attacker to execute code over a network.","severity":"high","score":8.8,"published":"2026-10-13T18:59:28.552Z","modified":"2026-10-28T18:09:04.741Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-102858"],"sources":[{"name":"CVE","id":"CVE-2026-102858","modified":"2026-10-28T18:09:04.741Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-102858"}],"assessments":[{"source":"microsoft","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","score":8.8}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T22:30:31.386Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}