Description
Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI). 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 End User. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM End User accessible data. CVSS 3.1 Base Score 4.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N).
Published: 2026-10-20
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Data integrity compromise via unauthorized data modification
Action: Apply Patch
AI Analysis

Impact

This vulnerability affects the Siebel CRM End User "Open UI" component and allows an unauthenticated attacker with network access via HTTP to compromise the application. Successful exploitation requires human interaction from a person other than the attacker. If triggered, the attacker can obtain unauthorized update, insert, or delete access to data that the user can normally view or modify, thereby compromising data integrity. The CVSS base score is 4.3, reflecting moderate risk with a low complexity and a requirement for user interaction.

Affected Systems

Oracle Siebel CRM End User product "Open UI", versions 17.0 through 26.9 are affected.

Risk and Exploitability

The vulnerability carries a CVSS 3.1 base score of 4.3, indicating moderate severity. The attack vector is network-based with low complexity. User interaction is required, which suggests social engineering of a legitimate user as the primary path to exploitation. No publicly documented exploits are available and the EPSS score is 0.00213, which is less than 1% and indicates a low probability of exploitation, but the vulnerability is not listed in the CISA KEV catalog. Because it permits unauthorized data modification, it poses a real risk to integrity and should be addressed promptly.

Generated by OpenCVE AI on October 23, 2026 at 23:09 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Download and install the latest Oracle Siebel CRM End User patch that addresses the Open UI vulnerability as published by Oracle’s CPU advisory, ensuring it is applied to all affected instances.
  • Restrict direct HTTP access to the Siebel UI by placing the application behind a web application firewall or by segmenting the network so that only trusted internal systems can reach the UI.
  • Educate end‑users to verify web requests and be cautious of unsolicited actions, as the vulnerability requires a non‑technical user interaction for exploitation.

Generated by OpenCVE AI on October 23, 2026 at 23:09 UTC.

Tracking

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Advisories

No advisories yet.

History

Wed, 04 Nov 2026 17:00:00 +0000

Type Values Removed Values Added
First Time appeared Oracle siebel Crm
CPEs cpe:2.3:a:oracle:siebel_crm:*:*:*:*:*:*:*:*
Vendors & Products Oracle siebel Crm

Fri, 23 Oct 2026 23:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated Data Modification Vulnerability in Oracle Siebel CRM End User Open UI

Fri, 23 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-601
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-284

Tue, 20 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI). 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 End User. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM End User accessible data. CVSS 3.1 Base Score 4.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N).
First Time appeared Oracle
Oracle siebel Crm End User
CPEs cpe:2.3:a:oracle:siebel_crm_end_user:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle siebel Crm End User
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'}


Subscriptions

Oracle Siebel Crm Siebel Crm End User
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-23T20:13:16.188Z

Reserved: 2026-09-14T22:10:16.634Z

Link: CVE-2026-91428

cve-icon Vulnrichment

Updated: 2026-10-23T20:13:10.915Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T22:20:46.203

Modified: 2026-11-04T16:54:54.860

Link: CVE-2026-91428

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-23T23:15:07Z

Weaknesses
  • CWE-284

    Improper Access Control

  • CWE-601

    URL Redirection to Untrusted Site ('Open Redirect')