A vulnerability exists in the Siebel CRM Cloud Applications product of Oracle Siebel CRM, specifically in the Siebel Cloud Manager component. This flaw affects supported versions from 22.3 through 26.7. It allows an unauthenticated attacker with network access via HTTP to gain unauthorized access to critical data or full access to all accessible Siebel CRM Cloud Applications data, including the ability to update, insert, or delete some data. The vulnerability has a CVSS 3.1 base score of 8.2, indicating high severity with significant confidentiality and integrity impacts.