{"id":"CVE-2026-63516","aliases":["EUVD-2026-56297","GHSA-jg9v-rf24-xph9"],"status":"published","title":"Microsoft SharePoint Server Spoofing Vulnerability","description":"Deserialization of untrusted data 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":0.01874,"percentile":0.79569,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2026-08-11T17:03:30Z","modified":"2026-11-10T21:57:07Z","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-2026-63516","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63516"},{"url":"https://github.com/advisories/GHSA-jg9v-rf24-xph9"}],"sources":{"cve":[{"id":"CVE-2026-63516","title":"Microsoft SharePoint Server Spoofing Vulnerability","description":"Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-11T17:03:30.803Z","modified":"2026-11-10T21:57:07.95Z","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-502"],"updated_at":"2026-11-10T22:48:52.144232Z"}],"euvd":[{"id":"EUVD-2026-56297","description":"Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-11T17:03:30Z","modified":"2026-11-10T21:57:07Z","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":"2026-11-10T23:24:18.338578Z"}],"ghsa":[{"id":"GHSA-jg9v-rf24-xph9","title":"Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to...","description":"Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-11T18:31:31Z","modified":"2026-08-11T18:31:39Z","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-502"],"updated_at":"2026-11-02T15:10:19.387522Z"}],"nvd":[{"id":"CVE-2026-63516","description":"Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.","status":"published","published":"2026-08-11T17:18:46.5Z","modified":"2026-08-12T15:18:07.247Z","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-502"],"updated_at":"2026-11-02T14:12:36.499002Z"}]}}