CVE-2026-91439

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-2026-91439

EUVD

EUVD-2026-106689

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 affecting versions 17.0 to 26.9. It allows a low-privileged attacker with local access to compromise the system and gain unauthorized access to critical data or all accessible data.

Detection Guidance

Detection of this vulnerability requires checking for Oracle Siebel CRM Deployment versions 17.0-26.9 and verifying if unauthorized access to critical data is possible. Review system logs for suspicious activity related to Siebel CRM Deployment processes. Ensure access controls are properly configured to prevent low-privileged users from accessing sensitive data.

Impact Analysis

An attacker could exploit this to access sensitive data stored or processed by Siebel CRM Deployment, potentially leading to data breaches or unauthorized information disclosure.

Compliance Impact

This vulnerability could lead to unauthorized data access, which may violate compliance requirements such as GDPR or HIPAA, potentially resulting in legal penalties or loss of certification.

Mitigation Strategies

Apply the latest Oracle Siebel CRM patches or updates for versions 17.0-26.9 to address the vulnerability. Ensure proper access controls are enforced to limit low-privileged user access to the infrastructure where Siebel CRM Deployment executes.

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EPSS Chart

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