CVE-2026-91367

Analyzed Analyzed - Analysis Complete

Security Bypass in Siebel CRM Cloud Applications

Publication date: 2026-10-20

Last updated on: 2026-11-04

Assigner: Oracle

Description

Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 22.3-26.9. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Siebel CRM Cloud Applications executes to compromise Siebel CRM Cloud Applications. While the vulnerability is in Siebel CRM Cloud Applications, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Siebel CRM Cloud Applications accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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-2026-91367

EUVD

EUVD-2026-106621

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	siebel_crm	From 22.3 (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 Cloud Applications (versions 22.3-26.9) where a low-privileged attacker with system access can exploit it to gain unauthorized access to critical data or full access to all application data. The attack requires local system access but can impact other connected products.

Detection Guidance

Detection of CVE-2026-91367 requires monitoring for unauthorized access to Siebel CRM Cloud Applications data. Check application logs for unusual logins or data access patterns. Ensure Siebel Cloud Manager component is updated to the latest version. No specific commands are provided in the context.

Impact Analysis

If you use Oracle Siebel CRM Cloud Applications versions 22.3-26.9, an attacker with local system access could steal sensitive data or gain full control over the application. This could lead to data breaches, unauthorized modifications, or service disruption.

Compliance Impact

This vulnerability could lead to unauthorized data access, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Organizations may face legal penalties, fines, or reputational damage if data is compromised due to this flaw.

Mitigation Strategies

Apply the latest Oracle Siebel CRM Cloud Applications patches for versions 22.3-26.9. Restrict user privileges to minimize access. Monitor logs for unusual activity in the Siebel Cloud Manager component.

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