CVE-2021-2156: Oracle Customers Online

High severity, CVSS 8.1. EPSS: 1% chance of exploitation in the next 30 days.

Vulnerability in the Oracle Customers Online product of Oracle E-Business Suite (component: Customer Tab). Supported versions that are affected are 12.1.3 and 12.2.3-12.2.10. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Customers Online. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Customers Online accessible data as well as unauthorized access to critical data or complete access to all Oracle Customers Online 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).

Affected products

• Oracle Customers Online: from 12.2.3, up to and including 12.2.10; version 12.1.3 only

Published 2021-04-22. Last modified 2026-06-17.