{"id":"CVE-2026-62917","published":"2026-08-11T17:07:19Z","modified":"2026-10-30T17:23:08Z","title":"Microsoft SharePoint Server Spoofing Vulnerability","vendor":"Microsoft","product":"Microsoft SharePoint Enterprise Server 2016","tier":"tail","description":{"text":"Improper input validation in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","provenance":"source","from":"CVE.org"},"cvss":{"score":4.6,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.00583,"percentile":0.47846,"provenance":"source"},"cwes":[{"id":"CWE-20","name":"Improper Input Validation"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62917","tags":["vendor-advisory","patch"]}],"priority":{"score":12.8,"factors":[{"name":"EPSS percentile","points":9.57},{"name":"CVSS severity","points":3.22}]},"vendorSlug":"microsoft","affectedVersions":[{"vendor":"Microsoft","product":"Microsoft SharePoint Enterprise Server 2016","versions":[">= 16.0.0, < 16.0.5565.1001"]},{"vendor":"Microsoft","product":"Microsoft SharePoint Server 2019","versions":[">= 16.0.0, < 16.0.10417.20198"]},{"vendor":"Microsoft","product":"Microsoft SharePoint Server Subscription Edition","versions":[">= 16.0.0, < 16.0.19725.20522"]}],"euvd":{"id":"EUVD-2026-56777","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-microsoft-sharepoint-cwe-20"}}