{"schemaVersion":3,"id":"CVE-2026-88166","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Integer overflow or wraparound in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.","dates":{"published":"2026-10-13T19:01:14.099Z","modified":"2026-10-21T21:01:42.558Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.8,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","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","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.8,"severity":"high","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","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.8,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00819,"percentile":0.567,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-14T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00819,"percentile":0.567}],"last30":[{"date":"2026-10-14T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00819,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00819,"percentile":0.567}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-190","name":"Integer Overflow or Wraparound","description":"The product performs a calculation that can\n         produce an integer overflow or wraparound when the logic\n         assumes that the resulting value will always be larger than\n         the original value. 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