CVE-2026-83201

Analyzed Analyzed - Analysis Complete

Unauthenticated Data Access in Siebel CRM Deployment

Publication date: 2026-09-15

Last updated on: 2026-09-21

Assigner: Oracle

Description

Vulnerability in the Siebel CRM Deployment product of Oracle Siebel CRM (component: Server Infrastructure). Supported versions that are affected are 17.0-26.7. 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 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 9.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N).

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-15

Last Modified

2026-09-21

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-83201

EUVD

EUVD-2026-79553

Affected Vendors & Products

Vendor	Product	Version / Range
oracle	siebel_crm	From 17.0 (inc) to 26.7 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-287	When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
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 Deployment (versions 17.0-26.7) that allows an unauthenticated attacker to remotely access and compromise the system via HTTP. Successful exploitation can lead to unauthorized creation, deletion, or modification of critical data, as well as unauthorized access to all accessible data in the Siebel CRM Deployment.

Detection Guidance

This vulnerability affects Oracle Siebel CRM Deployment versions 17.0-26.7 and can be exploited via HTTP. Detection should focus on monitoring HTTP traffic for unauthorized access attempts or unusual data modifications. Check server logs for suspicious activity related to Siebel CRM components. Ensure all systems are updated to the latest patched versions.

Impact Analysis

If exploited, this vulnerability could allow attackers to steal, alter, or delete sensitive data stored in the Siebel CRM system. This may lead to data breaches, financial loss, reputational damage, or disruption of critical business operations depending on the data stored.

Compliance Impact

This vulnerability could lead to non-compliance with regulations like GDPR or HIPAA, as unauthorized access or data modification may violate data protection requirements. Organizations using affected versions may face legal penalties, fines, or mandatory audits due to compromised data integrity and confidentiality.

Mitigation Strategies

Apply the latest Oracle Siebel CRM patches or updates for versions 17.0-26.7 to address the vulnerability. Ensure network access controls restrict HTTP traffic to trusted sources only. Monitor Siebel CRM Deployment logs for unauthorized access attempts or data modifications.

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