CVE-2024-21126: Oracle Database Server

Medium severity, CVSS 5.8. EPSS: 0.5% chance of exploitation in the next 30 days.

Vulnerability in the Oracle Database Portable Clusterware component of Oracle Database Server. Supported versions that are affected are 19.3-19.23 and 21.3-21.14. Easily exploitable vulnerability allows unauthenticated attacker with network access via DNS to compromise Oracle Database Portable Clusterware. While the vulnerability is in Oracle Database Portable Clusterware, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Database Portable Clusterware. CVSS 3.1 Base Score 5.8 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L).

Affected products

• Oracle Database Server: from 19.3, up to and including 19.23; from 21.3, up to and including 21.14

Published 2024-07-16. Last modified 2026-06-17.