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

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Changed

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00127.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Oracle Corporation Oracle Essbase affected
Version Status Constraints
21.8.3.0.0 affected —

Configuration 1 [-]

cpe:2.3:a:oracle:essbase:21.8.3.0.0:*:*:*:*:*:*:*

No data.

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Vendors Products
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Essbase Subscribe

Project Subscriptions

Vendors Products
Oracle Subscribe
Essbase Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.oracle.com/security-alerts/cpuoct2026.html cve-icon cve-icon
History

Fri, 23 Oct 2026 22:15:00 +0000

Type Values Removed Values Added
Title Local Privileged Attacker Can Compromise Oracle Essbase, Leading to Unauthorized Data Access
Weaknesses CWE-755

Fri, 23 Oct 2026 20:45:00 +0000

Type Values Removed Values Added
Title High Privilege Local Exploit in Oracle Essbase Allowing Unauthorized Data Access
Weaknesses CWE-200
CWE-284

Fri, 23 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Weaknesses NVD-CWE-noinfo

Wed, 21 Oct 2026 12:30:00 +0000

Type Values Removed Values Added
Title High Privilege Local Exploit in Oracle Essbase Allowing Unauthorized Data Access
Weaknesses CWE-200
CWE-284

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description Vulnerability in Oracle Essbase (component: Security). 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).
First Time appeared Oracle
Oracle essbase
CPEs cpe:2.3:a:oracle:essbase:21.8.3.0.0:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle essbase
References
Metrics cvssV3_1

{'score': 6, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-20T21:26:44.885Z

Reserved: 2026-09-14T22:10:16.649Z

Link: CVE-2026-91633

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T22:21:03.230

Modified: 2026-10-23T17:19:37.843

Link: CVE-2026-91633

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T22:00:28Z

Weaknesses