{"id":"CVE-2026-56157","aliases":["EUVD-2026-44233","GHSA-p7vq-vr5c-p2r6"],"status":"published","title":"Microsoft SharePoint Server Spoofing Vulnerability","description":"Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00496,"percentile":0.42875,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2026-07-14T17:09:13Z","modified":"2026-11-01T17:36:44Z","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-2026-56157","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-56157"},{"url":"https://github.com/advisories/GHSA-p7vq-vr5c-p2r6"}],"sources":{"cve":[{"id":"CVE-2026-56157","title":"Microsoft SharePoint Server Spoofing Vulnerability","description":"Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-07-14T17:09:13.214Z","modified":"2026-11-01T17:36:44.815Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T13:37:02.780526Z"}],"euvd":[{"id":"EUVD-2026-44233","description":"Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-07-14T17:09:13Z","modified":"2026-11-01T17:36:44Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T16:58:46.970263Z"}],"ghsa":[{"id":"GHSA-p7vq-vr5c-p2r6","title":"Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform...","description":"Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-07-14T18:32:37Z","modified":"2026-07-14T18:32:42Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:09:30.715875Z"}],"nvd":[{"id":"CVE-2026-56157","description":"Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-07-14T18:18:22.673Z","modified":"2026-07-15T15:13:19.563Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:12:29.489525Z"}]}}