{"id":"CVE-2026-88166","aliases":["EUVD-2026-100179","GHSA-94rr-7cq4-rj7c"],"status":"published","title":"Microsoft Office SharePoint Remote Code Execution Vulnerability","description":"Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","severity":{"version":"3.1","score":8.8,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00947,"percentile":0.61403,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121","CWE-190"],"published":"2026-10-13T19:01:14Z","modified":"2026-10-31T18:10:50Z","products":[{"vendor":"microsoft","product":"microsoft sharepoint server subscription edition"},{"vendor":"microsoft","product":"sharepoint_server"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88166","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88166"},{"url":"https://github.com/advisories/GHSA-94rr-7cq4-rj7c"}],"sources":{"cve":[{"id":"CVE-2026-88166","title":"Microsoft Office SharePoint Remote Code Execution Vulnerability","description":"Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:01:14.099Z","modified":"2026-10-31T18:10:50.884Z","cvss":[{"version":"3.1","score":8.8,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-190","CWE-121"],"updated_at":"2026-11-02T13:41:53.237769Z"}],"euvd":[{"id":"EUVD-2026-100179","description":"Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:01:14Z","modified":"2026-10-31T18:10:50Z","cvss":[{"version":"3.1","score":8.8,"vector":"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","level":"high"}],"updated_at":"2026-11-02T16:58:51.271577Z"}],"ghsa":[{"id":"GHSA-94rr-7cq4-rj7c","title":"Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to...","description":"Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","status":"published","published":"2026-10-13T21:36:48Z","modified":"2026-10-13T21:36:52Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T15:13:19.101875Z"}],"nvd":[{"id":"CVE-2026-88166","description":"Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:21:37.2Z","modified":"2026-10-14T19:44:44.833Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-121","CWE-190"],"updated_at":"2026-11-02T14:12:58.13117Z"}]}}