{"id":"CVE-2026-45484","title":"Microsoft SharePoint Elevation of Privilege Vulnerability","summary":"Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.","severity":"high","cvss":8.8,"cvssVector":"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","cvssSource":"cna","cwe":["CWE-502"],"vendor":"Microsoft","product":"Microsoft SharePoint Enterprise Server 2016","affected":["sharepoint_enterprise_server_2016 >= 16.0.0 < 16.0.5556.1005","sharepoint_server_2019 >= 16.0.0 < 16.0.10417.20153","sharepoint_server_subscription_edition >= 16.0.0 < 16.0.19725.20384"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-06-10T03:56:59.182927Z"},"published":"2026-06-09","updated":"2026-09-24","sourceUpdated":"2026-09-24T13:44:44.852Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-45484","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45484","label":"Microsoft SharePoint Elevation of Privilege Vulnerability"}],"tags":["cve.org"],"epss":0.35216,"epssPercentile":0.98373,"ingestedAt":"2026-09-24T14:44:21.385Z","slug":"CVE-2026-45484","body":"## Overview\n\nDeserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.\n\n## Affected\n\n- `sharepoint_enterprise_server_2016 >= 16.0.0 < 16.0.5556.1005`\n- `sharepoint_server_2019 >= 16.0.0 < 16.0.10417.20153`\n- `sharepoint_server_subscription_edition >= 16.0.0 < 16.0.19725.20384`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":55,"depthScoreParts":{"impact":48.4,"likelihood":7,"exploitation":0,"ransomware":0},"changes":[]}