CVE-2021-35551: Oracle Database

Medium severity, CVSS 5.5. EPSS: 0.8% chance of exploitation in the next 30 days.

Vulnerability in the RDBMS Security component of Oracle Database Server. Supported versions that are affected are 12.2.0.1, 19c and 21c. Easily exploitable vulnerability allows high privileged attacker having DBA privilege with network access via Oracle Net to compromise RDBMS Security. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of RDBMS Security as well as unauthorized update, insert or delete access to some of RDBMS Security accessible data. CVSS 3.1 Base Score 5.5 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H).

Affected products

• Oracle Database: version 12.2.0.1 only; version 19c only; version 21c only

Published 2021-10-20. Last modified 2026-06-17.