CVE-2026-91423

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 high 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 creation, deletion or modification access to critical data or all Siebel CRM Deployment accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 6.0 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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-2026-91423

EUVD

EUVD-2026-106674

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 vulnerability affects Oracle Siebel CRM Deployment versions 17.0 to 26.9. It allows a highly privileged attacker with local access to compromise the system. Successful exploitation can lead to unauthorized data creation, deletion, or modification, as well as unauthorized access to critical data.

Detection Guidance

This vulnerability requires high privileged access to the infrastructure where Siebel CRM Deployment executes. Detection may involve monitoring for unauthorized data modifications or access patterns within the Siebel CRM Deployment environment. Check logs for suspicious activities related to data creation, deletion, or modification. Ensure access controls and audit trails are properly configured.

Impact Analysis

If exploited, this vulnerability could allow attackers to alter or delete critical data, access sensitive information, or gain full control over the Siebel CRM Deployment system. This may disrupt business operations and lead to data breaches.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data integrity and confidentiality requirements. For HIPAA, it may compromise protected health information, risking compliance with security and privacy rules.

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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EPSS Chart

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