CVE-2026-91447: 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. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
Affected Software
Event History
Frequently Asked Questions
Which deployments are exposed to this issue?
Oracle Siebel CRM Deployment installations using affected supported versions 17.0 through 26.9 are exposed if an attacker can reach the Server Infrastructure component over HTTP.
Does exploitation require credentials or user interaction?
No. The vulnerability is described as easily exploitable by an unauthenticated attacker with network access via HTTP, with no user interaction required.
What could an attacker gain through successful exploitation?
Successful exploitation can provide unauthorized access to critical data or complete access to all data accessible to the affected Siebel CRM Deployment instance.
What should be prioritized if remediation cannot be completed immediately?
Restrict network access to the affected Server Infrastructure component over HTTP, particularly from untrusted networks, because HTTP reachability is the stated attack path.