CVE-2026-91449: High severity Oracle Siebel CRM Deployment vulnerability
Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.9. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM Deployment accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 7.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An unauthenticated attacker with network access to the affected Siebel CRM Deployment environment over HTTP can attempt exploitation. No prior account or user interaction is required, although exploitation is described as difficult.
What versions are affected?
Supported Oracle Siebel CRM Deployment versions 17.0 through 26.9 are affected.
What could a successful attacker do?
A successful attack could provide unauthorized access to critical data or all data accessible to Siebel CRM Deployment, and could allow creation, deletion, or modification of that data.