CVE-2026-91426

Analyzed Analyzed - Analysis Complete

Privilege Escalation in Oracle Siebel CRM Deployment

Publication date: 2026-10-20

Last updated on: 2026-11-04

Assigner: Oracle

Description

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 logon to the infrastructure where Siebel CRM Deployment executes 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. CVSS 3.1 Base Score 5.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).

CVSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-11-04

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-91426

EUVD

EUVD-2026-106676

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	siebel_crm	From 17.0 (inc) to 26.9 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-269	The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Siebel CRM Deployment versions 17.0-26.9. It allows a low-privileged attacker with local access to compromise the system. Successful exploitation can lead to unauthorized access to critical data or full access to all data accessible by Siebel CRM Deployment.

Impact Analysis

If you use Oracle Siebel CRM Deployment versions 17.0-26.9, an attacker with local access could steal sensitive data or gain full control over the system. This could expose customer information, business data, or other critical assets.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR and HIPAA requirements for data protection and confidentiality. Organizations may face legal penalties, reputational damage, and loss of compliance certifications.

Mitigation Strategies

Apply the latest Oracle Siebel CRM patches for versions 17.0-26.9 to address the vulnerability in the Server Infrastructure component.

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