{"id":"CVE-2026-62839","aliases":["EUVD-2026-56776","GHSA-59w3-vwvr-9367"],"status":"published","title":"Microsoft SharePoint Server Spoofing Vulnerability","description":"Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00911,"percentile":0.60317,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-522"],"published":"2026-08-11T17:07:18Z","modified":"2026-10-30T17:23:07Z","products":[{"vendor":"microsoft","product":"microsoft sharepoint enterprise server 2016"},{"vendor":"microsoft","product":"microsoft sharepoint server 2019"},{"vendor":"microsoft","product":"microsoft sharepoint server subscription edition"},{"vendor":"microsoft","product":"sharepoint_server"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62839","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62839"},{"url":"https://github.com/advisories/GHSA-59w3-vwvr-9367"}],"sources":{"cve":[{"id":"CVE-2026-62839","title":"Microsoft SharePoint Server Spoofing Vulnerability","description":"Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-11T17:07:18.702Z","modified":"2026-10-30T17:23:07.897Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-522"],"updated_at":"2026-11-02T14:20:14.999906Z"}],"euvd":[{"id":"EUVD-2026-56776","description":"Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-11T17:07:18Z","modified":"2026-10-30T17:23:07Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T16:59:03.451007Z"}],"ghsa":[{"id":"GHSA-59w3-vwvr-9367","title":"Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker...","description":"Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-11T18:31:27Z","modified":"2026-08-11T18:31:34Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-522"],"updated_at":"2026-11-02T15:10:19.387522Z"}],"nvd":[{"id":"CVE-2026-62839","description":"Insufficiently protected credentials in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-11T17:18:37.453Z","modified":"2026-08-13T14:17:03.85Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-522"],"updated_at":"2026-11-02T14:12:36.499002Z"}]}}