CVE-2026-91429: Medium 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 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 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N).
Affected Software
Event History
Frequently Asked Questions
Which deployments are exposed to this issue?
Oracle Siebel CRM Deployment installations using supported versions 17.0 through 26.9 are affected, specifically in the Server Infrastructure component. Exposure requires network access to the affected deployment over HTTP.
Does exploitation require an authenticated Siebel CRM account or user interaction?
No. The vulnerability can be exploited by an unauthenticated attacker, and no user interaction is required. However, the attack is rated difficult to exploit because it has high attack complexity.
What could a successful attacker access or change?
A successful attack could provide unauthorized access to critical data or all data accessible to Siebel CRM Deployment. It could also allow unauthorized update, insert, or delete operations on some accessible data.