CVE-2026-83154: Oracle Siebel CRM

Critical severity, CVSS 9.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI). Supported versions that are affected are 17.0-26.7. Easily exploitable vulnerability allows unauthenticated attacker with network access via SOAP to compromise Siebel CRM End User. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM End User accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM End User accessible data. CVSS 3.1 Base Score 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

Affected products

• Oracle Siebel CRM: from 17.0, up to and including 26.7

Published 2026-09-15. Last modified 2026-09-21.