CVE-2026-83223: Oracle Corporation Siebel CRM Deployment

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Siebel Remote). Supported versions that are affected are 17.0-26.7. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in takeover of Siebel CRM Deployment. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/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.