CVE-2026-83183: Oracle Siebel CRM

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.7. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Siebel CRM Deployment. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Affected products

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

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