CVE-2026-83351: Oracle Corporation Oracle Database Server

High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Vulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.3. Difficult to exploit vulnerability allows unauthenticated attacker with network access via Oracle Net to compromise RDBMS. Successful attacks of this vulnerability can result in takeover of RDBMS. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

Affected products

• Oracle Corporation Oracle Database Server: from 23.4.0, up to and including 23.26.3

Published 2026-09-15. Last modified 2026-09-17.