Description
Vulnerability in the Siebel CRM End User product of Oracle Siebel CRM (component: Open UI). Supported versions that are affected are 17.0-26.7. Easily exploitable vulnerability allows unauthenticated attacker with network access via SOAP to compromise Siebel CRM End User. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM End User accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM End User 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).
Published: 2026-09-15
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Unauthenticated SOAP access can lead to unauthorized data modification and full data access
Action: Immediate Patch
AI Analysis

Impact

The vulnerability exists in the Open UI component of Oracle Siebel CRM End User and allows an unauthenticated attacker, who can reach the system over the network via SOAP, to create, delete, or modify critical data. The flaw also permits unrestricted access to all data that would normally be available to Siebel users. With a CVSS 3.1 base score of 9.1, the impact includes high confidentiality and integrity damage, and the weakness is reflected by CWE-287 and CWE-306.

Affected Systems

Affected systems are Oracle Siebel CRM End User releases 17.0 through 26.7. Any deployed instance within this version range is vulnerable.

Risk and Exploitability

The CVSS score of 9.1 indicates critical severity, while the EPSS score of less than 1% suggests exploitation is currently unlikely but still possible. The flaw is not listed in the CISA KEV catalog. Attackers can exploit the vulnerability by sending crafted SOAP requests without prior authentication, so the attack vector is purely remote over the network.

Generated by OpenCVE AI on September 18, 2026 at 20:43 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply Oracle's latest patch for Siebel CRM End User that addresses the SOAP authentication bypass.
  • Limit the network exposure of the SOAP interface to trusted hosts or add firewall rules that restrict inbound access to the required IP ranges.
  • Disable or remove the Open UI component if it is not required for business operations, as the flaw is confined to that module.

Generated by OpenCVE AI on September 18, 2026 at 20:43 UTC.

Tracking

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Advisories

No advisories yet.

History

Mon, 21 Sep 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, 18 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated SOAP Vulnerability in Oracle Siebel CRM End User Allows Data Modification

Thu, 17 Sep 2026 02:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 17 Sep 2026 02:00:00 +0000

Type Values Removed Values Added
Title Unauthenticated SOAP Vulnerability in Oracle Siebel CRM End User Allows Data Modification

Tue, 15 Sep 2026 23:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-287
CWE-306

Tue, 15 Sep 2026 20:15:00 +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 17.0-26.7. Easily exploitable vulnerability allows unauthenticated attacker with network access via SOAP to compromise Siebel CRM End User. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Siebel CRM End User accessible data as well as unauthorized access to critical data or complete access to all Siebel CRM End User 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).
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': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

Subscriptions

Oracle Siebel Crm Siebel Crm End User
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-09-15T22:54:41.714Z

Reserved: 2026-08-31T15:40:57.343Z

Link: CVE-2026-83154

cve-icon Vulnrichment

Updated: 2026-09-15T22:47:30.875Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-15T20:18:26.193

Modified: 2026-09-21T16:54:13.387

Link: CVE-2026-83154

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-18T20:45:14Z

Weaknesses
  • CWE-287

    Improper Authentication

  • CWE-306

    Missing Authentication for Critical Function