CVE-2026-91662

Modified Modified - Updated After Analysis

Oracle Essbase Java Agent Privilege Escalation

Publication date: 2026-10-20

Last updated on: 2026-10-27

Assigner: Oracle

Description

Vulnerability in Oracle Essbase (component: Java Based Agent). The supported version that is affected is 21.8.3.0.0. Difficult to exploit vulnerability allows low privileged attacker with logon to the infrastructure where Oracle Essbase executes 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 unauthorized access to critical data or complete access to all Oracle Essbase accessible data as well as unauthorized update, insert or delete access to some of Oracle Essbase accessible data. CVSS 3.1 Base Score 6.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N).

CVSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-10-27

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-91662

EUVD

EUVD-2026-106849

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	essbase	21.8.3.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Essbase (Java Based Agent) version 21.8.3.0.0. It allows a low-privileged attacker with local access to compromise the system. Successful exploitation can lead to unauthorized access to critical data or full access to all Oracle Essbase data, as well as unauthorized data modification.

Impact Analysis

If you use Oracle Essbase 21.8.3.0.0, an attacker with local access could steal sensitive data, modify or delete data, or gain full control over the system. This could disrupt operations and lead to data breaches.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of sensitive data, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Apply the latest Oracle Essbase patches or updates provided by Oracle to address the vulnerability in version 21.8.3.0.0. Restrict user privileges to minimize access to Oracle Essbase infrastructure and sensitive data.

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