CVE-2026-91438: 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 low privileged 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 as well as unauthorized update, insert or delete access to some of Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 7.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N).
Affected Software
Event History
Frequently Asked Questions
Which deployments are affected?
Oracle Siebel CRM Deployment Server Infrastructure in supported versions 17.0 through 26.9 is affected.
What does an attacker need to exploit this vulnerability?
An attacker needs network access to the affected deployment over HTTP and a low-privileged account. No user interaction is required.
What could a successful attacker do?
A successful attack can provide unauthorized access to critical data or all data accessible to Siebel CRM Deployment. It can also allow unauthorized updates, inserts, or deletions of some accessible data.