{"affected":[{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft 365 Apps for Enterprise","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"https://aka.ms/OfficeSecurityReleases","status":"affected","version":"16.0.1","versionType":"custom"}]},{"product":"Microsoft Office 365 for Mac","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"16.115.26110837","status":"affected","version":"1.0.0","versionType":"custom"}]},{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft Office LTSC 2021","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"16.0.14334.21048","status":"affected","version":"16.0.1","versionType":"custom"}]},{"platforms":["32-bit Systems","x64-based Systems"],"product":"Microsoft Office LTSC 2024","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"16.0.17932.21140","status":"affected","version":"16.0.0","versionType":"custom"}]},{"product":"Microsoft Office LTSC for Mac 2021","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"16.115.26110837","status":"affected","version":"16.0.1","versionType":"custom"}]},{"product":"Microsoft Office LTSC for Mac 2024","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"16.115.26110837","status":"affected","version":"16.0.0","versionType":"custom"}]},{"product":"Office Online Server","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"16.0.10417.20236","status":"affected","version":"16.0.0.0","versionType":"custom"}]}],"cveId":"CVE-2026-116927","cwes":["CWE-122"],"description":"Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.","epss":{"date":"2026-11-12","percentile":0.59247,"score":0.00869},"exploits":[],"kev":null,"metrics":[{"score":8.8,"severity":"high","source":"CNA: 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","version":"3.1"},{"score":8.8,"severity":"high","source":"NVD: secure@microsoft.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794520291656,"publishedAt":1794335061522,"references":[{"source":"CNA: microsoft","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-116927"},{"source":"secure@microsoft.com","tags":[],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-116927"}],"remediation":[{"kind":"fix","source":"CNA: microsoft","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-116927"}],"revision":"23afefae6a4d80d36efa1aab1cb3e725d575191a9e247a650ebe3ffeac0b2cb4","sources":[{"modifiedAt":1794520291656,"name":"CNA: microsoft","retrievedAt":1794521995226,"url":"https://www.cve.org/CVERecord?id=CVE-2026-116927"},{"modifiedAt":1794341887097,"name":"NVD","retrievedAt":1794356732478,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116927"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794500289714,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-116927"}],"ssvc":{"assessedAt":1794340594229,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Microsoft Office Excel Remote Code Execution Vulnerability","updatedAt":1794521995226}