VPD Vulnerability in Oracle Database Server Affects Multiple Versions
CVE-2026-91503

8.1HIGH

Key Information:

Vendor

Oracle
Status
Oracle Database Server
Vendor
CVE Published:
20 October 2026

What is CVE-2026-91503?

The VPD component in Oracle Database Server has a vulnerability that is easily exploitable by low-privileged attackers with Create Table privileges. This flaw can be exploited over Oracle Net, allowing unauthorized users to create, delete, or modify critical data. Successful exploitation can lead to unauthorized access to sensitive information or complete control over all VPD accessible data, significantly impacting both the confidentiality and integrity of the database environment. Specific versions affected include 19.3-19.32, 21.3-21.23, and 23.4.0-23.26.3.

Affected Version(s)

Oracle Database Server 19.3 <= 19.32

Oracle Database Server 21.3 <= 21.23

Oracle Database Server 23.4.0 <= 23.26.3

References

https://www.oracle.com/security-alerts/cpuoct2026.html
vendor-advisory

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.