CVE-2026-101405

Modified Modified - Updated After Analysis

Authentication Bypass in Siebel Apps - Marketing

Publication date: 2026-10-20

Last updated on: 2026-11-06

Assigner: Oracle

Description

Vulnerability in the Siebel Apps - Marketing product of Oracle Siebel CRM (component: Marketing). Supported versions that are affected are 17.0-26.9. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Siebel Apps - Marketing. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel Apps - Marketing accessible data as well as unauthorized read access to a subset of Siebel Apps - Marketing accessible data. CVSS 3.1 Base Score 4.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/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

2026-11-06

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-101405

EUVD

EUVD-2026-105821

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-306	The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Siebel CRM's Siebel Apps - Marketing product versions 17.0 to 26.9. It allows an unauthenticated attacker with network access via HTTPS to potentially read or modify some data within the Marketing component. The attack is difficult to execute but could lead to unauthorized data access or changes.

Detection Guidance

Detection of this vulnerability requires monitoring network traffic for unauthorized access attempts to the Siebel Apps - Marketing component via HTTPS. Check for unusual data modifications or unauthorized read operations targeting the affected data. Ensure your intrusion detection systems are updated to flag anomalies in this component.

Impact Analysis

If exploited, this vulnerability could allow an attacker to read or alter certain data in your Siebel Apps - Marketing system without authorization. This might include customer or marketing data, potentially leading to data breaches or incorrect information being stored.

Compliance Impact

This vulnerability allows unauthorized read, update, insert, or delete access to some Siebel Apps - Marketing data, which could lead to unauthorized exposure or modification of sensitive personal or health information. This may violate GDPR's data protection principles or HIPAA's safeguards for protected health information if such data is compromised.

Mitigation Strategies

Apply the latest Oracle Siebel Apps - Marketing patches or updates as soon as possible to address the vulnerability in versions 17.0-26.9. Restrict network access to the Siebel Apps - Marketing component via HTTPS to limit exposure. Monitor for unusual data access or modification attempts in the Siebel Apps - Marketing system.

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