Description
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).
Published: 2026-10-20
Score: 9.8 Critical
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

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

Type Values Removed Values Added
Title Unauthenticated Remote Access Vulnerability in Oracle Essbase Leading to Full System Compromise
Weaknesses CWE-284

Wed, 21 Oct 2026 11:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-287
CWE-306
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

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 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).
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': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Subscriptions

Oracle Essbase
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-21T10:55:16.990Z

Reserved: 2026-09-14T22:10:16.651Z

Link: CVE-2026-91665

cve-icon Vulnrichment

Updated: 2026-10-21T10:52:05.260Z

cve-icon NVD

Status : Received

Published: 2026-10-20T22:21:06.960

Modified: 2026-10-21T11:17:12.240

Link: CVE-2026-91665

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-21T11:45:08Z

Weaknesses
  • CWE-284

    Improper Access Control

  • CWE-287

    Improper Authentication

  • CWE-306

    Missing Authentication for Critical Function