CVE-2026-83153

Received Received - Intake

Authentication Bypass in Siebel CRM Deployment

Publication date: 2026-09-15

Last updated on: 2026-09-15

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 low privileged attacker with network access via HTTPS to compromise Siebel CRM Deployment. Successful attacks of this vulnerability can result in takeover of Siebel CRM Deployment. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-15

Last Modified

2026-09-15

Generated

2026-10-06

AI Q&A

2026-09-16

EPSS Evaluated

2026-10-04

NVD

CVE-2026-83153

EUVD

EUVD-2026-79480

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This is a vulnerability in Oracle Siebel CRM Deployment versions 17.0 to 26.7. It allows a low-privileged attacker with network access via HTTPS to take over the Siebel CRM Deployment system. The vulnerability has a high CVSS score of 8.8 due to its impact on confidentiality, integrity, and availability.

Detection Guidance

Detection of CVE-2026-83153 requires checking for vulnerable versions of Oracle Siebel CRM Deployment (17.0-26.7). Inspect installed Siebel CRM components and verify if the version falls within the affected range. No specific commands are provided in the context.

Impact Analysis

If exploited, this vulnerability could allow an attacker to take full control of your Siebel CRM Deployment system. This could lead to unauthorized access to sensitive data, modification or deletion of critical information, and disruption of services.

Compliance Impact

This vulnerability could lead to unauthorized access or disclosure of personal or sensitive data, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Organizations using affected versions must address this to maintain compliance.

Mitigation Strategies

Apply the latest Oracle Critical Patch Update (CPU) for Siebel CRM Deployment versions 17.0-26.7 to address the vulnerability. Ensure network access is restricted to trusted sources and disable unnecessary services. Monitor Oracle's security advisories for updates and patches.

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