{"affected":[{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Enterprise Server 2016","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"16.0.5561.1001","status":"affected","version":"16.0.0","versionType":"custom"}]},{"platforms":["x64-based Systems"],"product":"Microsoft SharePoint Server 2019","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"16.0.10417.20175","status":"affected","version":"16.0.0","versionType":"custom"}]}],"cveId":"CVE-2026-58277","cwes":["CWE-285"],"description":"Improper authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.","epss":{"date":"2026-11-10","percentile":0.61225,"score":0.0094},"exploits":[],"kev":null,"metrics":[{"score":8.8,"severity":"high","source":"CNA: microsoft","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"}],"modifiedAt":1794350421274,"publishedAt":1784048983419,"references":[{"source":"CNA: microsoft","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58277"}],"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-2026-58277"}],"revision":"755341db0cc01a52055c9ccf2ecb3229d018aa9d007c96162fdbc380b1301d2e","sources":[{"modifiedAt":1794350421274,"name":"CNA: microsoft","retrievedAt":1794353244725,"url":"https://www.cve.org/CVERecord?id=CVE-2026-58277"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794353247088,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-58277"}],"ssvc":{"assessedAt":1783900800000,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Microsoft SharePoint Elevation of Privilege Vulnerability","updatedAt":1794353247088}