{"id":"CVE-2026-88155","aliases":["EUVD-2026-99729","GHSA-77gw-4c87-g3xj"],"status":"published","title":"Microsoft Office SharePoint Remote Code Execution Vulnerability","description":"Heap-based buffer overflow 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":"2026-11-11","score":0.00819,"percentile":0.57634,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-10-13T19:00:29Z","modified":"2026-11-10T20:40:05Z","products":[{"vendor":"microsoft","product":"microsoft sharepoint server subscription edition"},{"vendor":"microsoft","product":"sharepoint_server"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88155","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88155"},{"url":"https://github.com/advisories/GHSA-77gw-4c87-g3xj"}],"sources":{"cve":[{"id":"CVE-2026-88155","title":"Microsoft Office SharePoint Remote Code Execution Vulnerability","description":"Heap-based buffer overflow in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:00:29.993Z","modified":"2026-11-10T20:40:05.448Z","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-122"],"updated_at":"2026-11-10T22:18:29.471829Z"}],"euvd":[{"id":"EUVD-2026-99729","description":"Heap-based buffer overflow in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:00:29Z","modified":"2026-11-10T20:40:05Z","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":"2026-11-10T22:23:58.54025Z"}],"ghsa":[{"id":"GHSA-77gw-4c87-g3xj","title":"Heap-based buffer overflow in Microsoft Office SharePoint allows an authorized attacker to...","description":"Heap-based buffer overflow in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","status":"published","published":"2026-10-13T21:36:47Z","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-122"],"updated_at":"2026-11-02T15:13:19.101875Z"}],"nvd":[{"id":"CVE-2026-88155","description":"Heap-based buffer overflow in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","status":"published","published":"2026-10-13T19:21:35.59Z","modified":"2026-10-14T19:44:38.5Z","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-122"],"updated_at":"2026-11-02T14:12:58.13117Z"}]}}