Description
Vulnerability in the Oracle OLAP component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows low privileged attacker having DBMS_AW privilege with network access via Oracle Net to compromise Oracle OLAP. Successful attacks of this vulnerability can result in takeover of Oracle OLAP. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
Published: 2026-10-20
Score: 8.8 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Unauthorized Takeover
Action: Immediate Patch
AI Analysis

Impact

The Oracle OLAP component contains a vulnerability that allows an attacker with only the DBMS_AW privilege to compromise the system over Oracle Net. The flaw can be exploited from the network, requires low attack complexity, and needs only low privilege, enabling the attacker to gain full control of Oracle OLAP. Successful exploitation results in loss of confidentiality, integrity and availability, effectively allowing complete takeover of the component.

Affected Systems

Installed on Oracle Database Server for Oracle OLAP. Versions 19.3 through 19.32, 21.3 through 21.23, and 23.4.0 through 23.26.3 are affected. The vulnerability is reachable via Oracle Net when the attacker can connect to the database from a remote host.

Risk and Exploitability

The CVSS 3.1 base score of 8.8 indicates a high severity. The EPSS score is <1%, indicating a low but non‑zero probability of exploitation, and the flaw is not listed in the CISA KEV catalog. The remote nature of the exploit and the requirement for only a low‑privilege DBMS_AW role make it feasible for attackers to leverage it in the wild. Once exploited, an attacker can fully control the Oracle OLAP service, posing a critical threat to data and infrastructure.

Generated by OpenCVE AI on October 27, 2026 at 09:57 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest Oracle Database security patch covering the affected Oracle OLAP versions.
  • Restrict Oracle Net traffic to trusted hosts or networks using firewall rules or segmentation.
  • Revoke the DBMS_AW privilege from accounts that do not require it and enforce least‑privilege practices.
  • Audit the database to confirm that no unauthorized users retain elevated privileges.

Generated by OpenCVE AI on October 27, 2026 at 09:57 UTC.

Tracking

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Advisories

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History

Tue, 27 Oct 2026 10:15:00 +0000

Type Values Removed Values Added
Title Remote Takeover of Oracle OLAP via Low Privilege DBMS_AW

Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
Title Remote Oracle OLAP Takeover Using Low-Privilege DBMS_AW
Weaknesses CWE-284

Mon, 26 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-269
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 21 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
Title Remote Oracle OLAP Takeover Using Low-Privilege DBMS_AW
Weaknesses CWE-284

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

Type Values Removed Values Added
Description Vulnerability in the Oracle OLAP component of Oracle Database Server. Supported versions that are affected are 19.3-19.32, 21.3-21.23 and 23.4.0-23.26.3. Easily exploitable vulnerability allows low privileged attacker having DBMS_AW privilege with network access via Oracle Net to compromise Oracle OLAP. Successful attacks of this vulnerability can result in takeover of Oracle OLAP. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
First Time appeared Oracle
Oracle olap
CPEs cpe:2.3:a:oracle:olap:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle olap
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-26T20:25:27.681Z

Reserved: 2026-09-14T22:10:16.644Z

Link: CVE-2026-91563

cve-icon Vulnrichment

Updated: 2026-10-26T20:25:23.123Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T22:20:59.283

Modified: 2026-10-26T21:20:47.657

Link: CVE-2026-91563

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T10:00:15Z

Weaknesses
  • CWE-269

    Improper Privilege Management