CVE-2026-83211: Oracle Corporation Siebel CRM Deployment

High severity, CVSS 7.8. EPSS: 0.1% 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 low privileged attacker with logon to the infrastructure where Siebel CRM Deployment executes to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in takeover of Siebel CRM Deployment. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Affected products

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

Published 2026-09-15. Last modified 2026-09-17.