{"schemaVersion":3,"id":"CVE-2026-86573","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Out-of-bounds write vulnerability in Hitachi Disk Array Driver for AIX and Hitachi Disk Array Driver for Virtual I/O Server.\n\nThis issue affects Hitachi Disk Array Driver for AIX: from 01-00 before 01-23-/A; Hitachi Disk Array Driver for Virtual I/O Server: from 01-04 before 01-23-/A.","dates":{"published":"2026-10-14T01:46:58.245Z","modified":"2026-10-18T13:54:09.447Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.1,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":5.1,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":5.1,"severity":"medium","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00134,"percentile":0.02613,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-14T00:00:00.000Z","score":0.00134,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00134,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00134,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00134,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00134,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00134,"percentile":0.02613}],"last30":[{"date":"2026-10-14T00:00:00.000Z","score":0.00134,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00134,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00134,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00134,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00134,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00134,"percentile":0.02613}]},"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-787","name":"Out-of-bounds Write","description":"The product writes data past the end, or before the beginning, of the intended buffer.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/787.html"}],"affected":[{"vendor":"hitachi","product":"hitachi disk array driver for aix","name":"Hitachi Disk Array Driver for AIX","label":"hitachi disk array driver for aix","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 01-00, < 01-23-/A","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 01-00, < 01-23-/A","eol":null,"hubHref":"/vendor/hitachi/hitachi_disk_array_driver_for_aix"},{"vendor":"hitachi","product":"hitachi disk array driver for virtual i/o server","name":"Hitachi Disk Array Driver for Virtual I/O Server","label":"hitachi disk array driver for virtual i/o server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 01-04, < 01-23-/A","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 01-04, < 01-23-/A","eol":null,"hubHref":"/vendor/hitachi/hitachi_disk_array_driver_for_virtual_io_server"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.hitachi.com/products/it/software/security/info/vuls/hitachi-sec-2026-137/index.html","label":"www.hitachi.com/products/it/software/security/info/vuls/hitachi-sec-2026-137/index.html","hostname":"www.hitachi.com","tags":[]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-14T01:46:58.245Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-18T13:54:09.447Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":20,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T06:56:53.260Z","stale":false,"partial":false}}