CVE-2026-91649

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. Easily exploitable vulnerability allows high 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. CVSS 3.1 Base Score 6.0 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/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-2026-91649

EUVD

EUVD-2026-106836

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	essbase	21.8.3.0.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-269	The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Essbase version 21.8.3.0.0 within the Java Based Agent component. It allows a highly privileged attacker with local system access to compromise Oracle Essbase. Successful exploitation could lead to unauthorized access to critical or all accessible data in Oracle Essbase.

Detection Guidance

Detection requires checking for Oracle Essbase version 21.8.3.0.0 or affected configurations. Use Oracle's official tools or scripts to verify installed versions and patch levels. No specific commands are provided in the given context.

Impact Analysis

If you use Oracle Essbase 21.8.3.0.0, an attacker with local access and high privileges could gain unauthorized access to sensitive data stored or processed by Oracle Essbase. This may result in data breaches, loss of confidentiality, or further lateral movement within your infrastructure.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or protected health data, violating GDPR or HIPAA requirements for data confidentiality and security. Organizations may face compliance violations, legal penalties, or reputational damage if exploited.

Mitigation Strategies

Apply the latest Oracle Essbase patches immediately. Restrict access to privileged users and monitor for unauthorized activity. Follow Oracle's security advisories for updates.

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EPSS Chart

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