CVE-2026-91440

Analyzed Analyzed - Analysis Complete

Siebel CRM Deployment Unauthorized Data Access

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 unauthenticated attacker with network access via HTTP to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM Deployment accessible data as well as unauthorized read access to a subset of Siebel CRM Deployment accessible data. CVSS 3.1 Base Score 6.5 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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-2026-91440

EUVD

EUVD-2026-106690

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 17.0-26.9. It allows an unauthenticated attacker with network access via HTTP to compromise the system. Successful exploitation can lead to unauthorized data access and modifications, including read, update, insert, or delete operations on some accessible data.

Detection Guidance

Detection of this vulnerability requires checking for vulnerable versions of Oracle Siebel CRM Deployment (17.0-26.9) via system inventory or patch management tools. No specific commands are provided in the available context.

Impact Analysis

If exploited, this vulnerability could allow attackers to access or alter sensitive data within the Siebel CRM Deployment system without authorization. This may lead to data breaches, loss of data integrity, or unauthorized modifications to critical business information.

Compliance Impact

This vulnerability allows unauthorized read and write access to some Siebel CRM Deployment data, which could lead to exposure or alteration of sensitive personal or health information. This may violate GDPR's data protection requirements or HIPAA's safeguards for protected health information if such data is compromised.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update for Siebel CRM Deployment versions 17.0-26.9. Restrict network access to HTTP ports used by Siebel CRM Deployment to trusted sources only. Monitor for unauthorized data access or modifications in Siebel CRM Deployment logs.

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EPSS Chart

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