CVE-2026-91437

Analyzed Analyzed - Analysis Complete

Siebel CRM Deployment Privilege Escalation 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 high privileged attacker with network access via HTTP to compromise Siebel CRM Deployment. While the vulnerability is in Siebel CRM Deployment, attacks may significantly impact additional products (scope change). 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 8.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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-2026-91437

EUVD

EUVD-2026-106687

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 Deployment versions 17.0 to 26.9. It allows a high-privileged attacker with network access via HTTP to compromise the system. Successful exploitation can lead to unauthorized creation, deletion, or modification of critical data, or full access to all data accessible by Siebel CRM Deployment.

Detection Guidance

This vulnerability affects Oracle Siebel CRM Deployment versions 17.0-26.9. Detection requires checking installed versions of Siebel CRM Deployment and verifying if they fall within the vulnerable range. No specific commands are provided in the CVE details for direct detection.

Impact Analysis

An attacker could gain unauthorized access to sensitive data, modify or delete critical information, or disrupt operations. The impact includes potential data breaches, loss of data integrity, and unauthorized system access, especially if additional products are affected.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR and HIPAA requirements for data confidentiality and integrity. Non-compliance may result in legal penalties, fines, or reputational damage.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update for Siebel CRM Deployment versions 17.0-26.9 to address the vulnerability. Ensure network access controls restrict HTTP access to trusted sources only. Monitor for unauthorized data modifications or access attempts in Siebel CRM Deployment logs.

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