CVE-2026-91438

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 as well as unauthorized update, insert or delete access to some of Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 7.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N).

CVSS Scores

EPSS Scores

Probability:
Percentile:

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-2026-91438

EUVD

EUVD-2026-106688

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 17.0-26.9. It allows a low-privileged attacker with network access via HTTP to compromise the system. Successful exploitation can lead to unauthorized access to critical data or full access to all accessible data, as well as unauthorized modifications to some data.

Detection Guidance

Detection of this vulnerability requires checking for unpatched versions of Oracle Siebel CRM Deployment (versions 17.0-26.9). Inspect installed versions and compare against Oracle's security advisories. Monitor network traffic for unauthorized HTTP access to Siebel CRM Deployment components. No specific commands are provided in the available context.

Impact Analysis

If exploited, this vulnerability could allow attackers to steal sensitive data, alter or delete data, 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 access or disclosure of personal or sensitive data, violating compliance requirements under GDPR, HIPAA, or other regulations. Organizations may face legal penalties, fines, or reputational damage.

Mitigation Strategies

Apply the latest Oracle Siebel CRM patches for versions 17.0-26.9 to address the vulnerability in the Server Infrastructure component.

Hi! I’m here to help you understand CVE-2026-91438. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70

EPSS Chart

Security Radar

News mentioning this vulnerability

Loading related security news...