CVE-2026-91434: Medium severity Oracle Siebel CRM Deployment vulnerability

Published Oct 20, 2026
·
Updated

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 high privileged attacker with logon to the infrastructure where Siebel CRM Deployment executes to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in takeover of Siebel CRM Deployment. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

Affected Software

2 affected components
Oracle Siebel CRM Deployment>=17.0<=26.9
Oracle Siebel CRM>=17.0<=26.9

Event History

Oct 20, 2026
CVE Published
via MITRE·09:25 PM
Data Sourced
via MITRE·09:25 PM
DescriptionSeverity
Data Sourced
via NVD·10:20 PM
DescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

Who is realistically exposed to this vulnerability?

Deployments of Oracle Siebel CRM Deployment using supported versions 17.0 through 26.9 are affected. Exploitation requires access to the infrastructure where Siebel CRM Deployment executes.

2

What level of access does an attacker need?

An attacker must already be highly privileged and able to log on to the relevant infrastructure. The vulnerability is locally exploitable and does not require user interaction.

3

What is the potential impact of successful exploitation?

A successful attack can result in takeover of Siebel CRM Deployment. Confidentiality, integrity, and availability can all be affected.

Contact

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