CVE-2026-91443

Analyzed Analyzed - Analysis Complete

Siebel CRM Deployment Unauthorized Data Access Vulnerability

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 network access via HTTP 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 6.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/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-2026-91443

EUVD

EUVD-2026-106693

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-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Siebel CRM Deployment (versions 17.0-26.9) where a low-privileged attacker with network access via HTTP can exploit it to gain unauthorized access to critical data or full access to all accessible data in the Siebel CRM Deployment system.

Detection Guidance

Detection of this vulnerability requires monitoring network traffic for unauthorized access attempts to the Siebel CRM Deployment component via HTTP. Check server logs for unusual HTTP requests targeting the affected product versions 17.0-26.9. Ensure access controls are enforced and low-privileged users cannot access critical data.

Impact Analysis

An attacker could steal sensitive data stored in the Siebel CRM system, leading to data breaches. This may include customer information, business data, or other confidential records, depending on what the system holds.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, or other regulations due to unauthorized data access. Organizations may face legal penalties, fines, or reputational damage if sensitive data is exposed.

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 access to only trusted sources. Monitor for unauthorized access attempts or unusual data access patterns in Siebel CRM Deployment logs.

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