CVE-2026-91420: 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. 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 creation, deletion or modification access to critical data or all Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 6.5 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N).
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Oracle Siebel CRM Deployment Server Infrastructure installations on supported versions 17.0 through 26.9 are affected, provided an attacker can reach the vulnerable HTTP interface over the network.
What level of access does an attacker need?
The attacker needs network access via HTTP and low-privileged access to Siebel CRM Deployment. No user interaction is required, and exploitation is described as easily exploitable.
What could a successful attack accomplish?
A successful attack can allow unauthorized creation, deletion, or modification of critical data or all data accessible to Siebel CRM Deployment. The stated impact is integrity only; no confidentiality or availability impact is specified.