CVE-2026-91450: 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
Does exploitation require valid Siebel CRM credentials or user interaction?
No. The vulnerability can be exploited by an unauthenticated attacker, and no user interaction is required. The attacker must have network access to the affected deployment through HTTP.
What access conditions make a deployment exposed?
A supported Oracle Siebel CRM Deployment version from 17.0 through 26.9 is affected when an attacker can reach its Server Infrastructure component over HTTP. The provided information does not state whether a default configuration is affected.
What is the likely impact of a successful attack?
An attacker may gain unauthorized access to critical data or all data accessible to Siebel CRM Deployment, and may create, delete, or modify that data. The stated CVSS impacts affect confidentiality and integrity, with no availability impact indicated.
How practical is exploitation?
The vulnerability is network reachable and requires no privileges, but it is rated difficult to exploit due to high attack complexity. This does not eliminate risk where HTTP access to affected deployments is available.