by Kastro
Paper/Archive/CVE-2026-91637

CVE-2026-91637

Oracle Corporation Oracle Essbase — Vulnerability in Oracle Essbase (component: Security).

EPSS 0.3%CVSS 9.9
critical.is priorityof 100
35
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 28.4.284 × 205.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Vulnerability in Oracle Essbase (component: Security). The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Essbase. While the vulnerability is in Oracle Essbase, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Essbase. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).

Affected

ProductAffectedFixed inSource
Oracle Essbase21.8.3.0.0–CNA

Scores by source

oracle (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisoryoracle.com/security-alerts/cpuoct2026.html