{"id":"CVE-2026-91647","title":"Vulnerability in Oracle Essbase (component: Security)","summary":"Vulnerability in Oracle Essbase (component: Security).   The supported version that is affected is 21.8.3.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TCP to compromise Oracle Essbase.  …","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","vendor":"Oracle Corporation","product":"Oracle Essbase","affected":["oracle_essbase 21.8.3.0.0"],"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T21:26:49.837Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-91647","references":[{"url":"https://www.oracle.com/security-alerts/cpuoct2026.html","label":"Oracle Advisory"}],"tags":["cve.org"],"ingestedAt":"2026-10-20T22:23:33.707Z","slug":"CVE-2026-91647","body":"## Overview\n\nVulnerability in Oracle Essbase (component: Security).   The supported version that is affected is 21.8.3.0.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via TCP to compromise Oracle Essbase.  Successful attacks of this vulnerability can result in takeover of Oracle Essbase. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).\n\n## Affected\n\n- `oracle_essbase 21.8.3.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}