---
id: CVE-2026-83203
title: >-
  Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM
  (component: Open UI)
summary: >-
  Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM
  (component: Open UI).  Supported versions that are affected are 17.0-26.7.
  Easily exploitable vulnerability allows unauthenticated attacker with network
  access via HTT…
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L'
cwe:
  - CWE-284
vendor: Oracle Corporation
product: Siebel CRM End User
affected:
  - siebel_crm_end_user >= 17.0 <= 26.7
published: '2026-09-15'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T16:18:09.020'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-83203'
references:
  - url: 'https://www.oracle.com/security-alerts/cspusep2026.html'
    label: secalert_us@oracle.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-17T14:27:12.406462Z'
epss: 0.00358
epssPercentile: 0.26847
ingestedAt: '2026-09-15T20:44:02.486Z'
---

## Overview

Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI).  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 End User.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Siebel CRM End User accessible data as well as  unauthorized update, insert or delete access to some of Siebel CRM End User accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Siebel CRM End User. CVSS 3.1 Base Score 8.6 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L).

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.