CVE-2026-91423: 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 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 6.0 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N).

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?

Organizations running affected Oracle Siebel CRM Deployment versions 17.0 through 26.9 are exposed where an attacker can obtain a high-privileged account and log on to the infrastructure hosting the deployment component.

2

What level of access does an attacker need to exploit it?

Exploitation requires local access and high privileges on the infrastructure where Siebel CRM Deployment executes. No user interaction is required.

3

What could an attacker achieve after successful exploitation?

A successful attack can allow unauthorized creation, deletion, or modification of critical data or all data accessible to Siebel CRM Deployment. It can also provide unauthorized access to critical data or complete access to all data accessible to the deployment component.

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