CVE-2026-91432

Analyzed Analyzed - Analysis Complete

Siebel CRM End User Unauthorized Data Access Vulnerability

Publication date: 2026-10-20

Last updated on: 2026-11-04

Assigner: Oracle

Description

Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI). Supported versions that are affected are 17.0-26.9. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM End User. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM End User accessible data as well as unauthorized read access to a subset of Siebel CRM End User accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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-2026-91432

EUVD

EUVD-2026-106682

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-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Siebel CRM End User (Open UI component) affecting versions 17.0 to 26.9. It allows an unauthenticated attacker with network access via HTTP to compromise the system. Successful exploitation can lead to unauthorized data access or modification, including read, update, insert, or delete operations on accessible data.

Detection Guidance

This vulnerability affects Oracle Siebel CRM End User versions 17.0-26.9 and can be exploited via HTTP. Detection requires checking for unauthorized access or modifications to Siebel CRM data. No specific commands are provided in the context, but monitoring HTTP traffic to Siebel CRM endpoints and reviewing access logs for unusual activity may help identify potential exploitation.

Impact Analysis

If exploited, this vulnerability could allow attackers to access or alter sensitive customer data stored in Siebel CRM. This may lead to data breaches, loss of customer trust, financial penalties, or operational disruptions depending on the data involved.

Compliance Impact

This vulnerability could lead to unauthorized access or modification of personal or health data, violating GDPR or HIPAA requirements. Organizations using affected Siebel CRM versions may face compliance violations, legal consequences, or regulatory fines if data is compromised.

Mitigation Strategies

Apply the latest Oracle Siebel CRM patches or updates for versions 17.0-26.9 to address the vulnerability. Ensure network access controls restrict HTTP traffic to trusted sources only. Monitor Siebel CRM logs for unusual activity or unauthorized access attempts.

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