CVE-2026-70856: Oracle Siebel CRM

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: Migration). Supported versions that are affected are 17.0-26.6. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Deployment. Successful attacks require human interaction from a person other than the attacker. 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:N/UI:R/S:U/C:H/I:H/A:H).

Affected products

• Oracle Siebel CRM: from 17.0, up to and including 26.6

Published 2026-08-18. Last modified 2026-08-21.