CRITICAL 9.9 NVD

CVE-2026-91663

Vulnerability in Oracle Essbase (component: Security). The supported version that is affected is 21.8.3.0.0. Easily exploitable vulnerability allows low privi

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 T3, IIOP 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).

References

https://www.oracle.com/security-alerts/cpuoct2026.html

Published: 2026-10-20 · Source: NVD · Feed updated: 2026-10-20

This critical severity vulnerability with a CVSS score of 9.9 was published on 2026-10-20 via NVD.

Risk Timeline

CVE Disclosed2026-10-20 · -1 days ago

Remediation Resources

Official Advisory

www.oracle.com/security-alerts/cpuoct2026.html

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