by Kastro
Paper/Archive/CVE-2026-91665

CVE-2026-91665

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

EPSS 0.5%CVSS 9.8
critical.is priorityof 100
38
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 40.6.406 × 208.1No 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 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 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Affected

ProductAffectedFixed inSource
Oracle Essbase21.8.3.0.0–CNA

Scores by source

oracle (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisoryoracle.com/security-alerts/cpuoct2026.html