CVE-2026-91503

Received Received - Intake

VPD Component Privilege Escalation in Oracle Database Server

Publication date: 2026-10-20

Last updated on: 2026-10-20

Assigner: Oracle

Description

Vulnerability in the VPD 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 Create Table privilege with network access via Oracle Net to compromise VPD. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all VPD accessible data as well as unauthorized access to critical data or complete access to all VPD accessible data. CVSS 3.1 Base Score 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-20

Last Modified

2026-10-20

Generated

2026-10-21

AI Q&A

2026-10-21

EPSS Evaluated

N/A

NVD

CVE-2026-91503

Affected Vendors & Products

Vendor	Product	Version / Range
Oracle	Corporation	Oracle Database Server 19.3
Oracle	Corporation	Oracle Database Server 21.3
Oracle	Corporation	Oracle Database Server 23.4.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a vulnerability in the Virtual Private Database (VPD) component of Oracle Database Server affecting versions 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3. It allows a low-privileged attacker with Create Table privilege and network access to exploit the system via Oracle Net. Successful exploitation can lead to unauthorized creation, deletion, or modification of critical data or all VPD-accessible data, as well as unauthorized access to critical data.

Impact Analysis

This vulnerability can allow attackers to modify or delete sensitive data, access confidential information, or gain complete control over all data accessible through the VPD component. The high CVSS score of 8.1 indicates significant risk to data confidentiality and integrity.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating compliance requirements for GDPR (data protection), HIPAA (health information security), and other regulations. Non-compliance may result in legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Apply the latest Oracle Database Server patches for versions 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3 to address the VPD component vulnerability. Restrict network access to Oracle Net and limit Create Table privileges to trusted users.

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