CVE-2026-83154

Published Sep 15, 2026 CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed

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).

Analysis

Technical 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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Oracle Corporation

Siebel CRM End User

affected

Version	Status	Constraints
`17.0`	affected	≤ 26.7

Configuration 1 [-]

cpe:2.3:a:oracle:siebel_crm:*:*:*:*:*:*:*:*

No data.

Vendor Product Versions

Oracle

Siebel Crm End User

Version	Status	Scheme	Platform
`[17.0,26.7]`	affected	generic	—

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

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.425% probability within 30 days)

Exploitation none

Automatable yes

Technical Impact total

References

Link	Providers
https://www.oracle.com/security-alerts/cspusep2026.html

History

Sep 21, 2026 5:00 PM First appearance in the feed. Affected versions updated. Affected vendors updated View changes

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

Sep 18, 2026 9:30 PM Title updated View changes

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

Sep 17, 2026 2:30 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

Sep 17, 2026 2:00 AM Title updated View changes

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

Sep 15, 2026 11:30 PM Weaknesses updated View changes

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

Sep 15, 2026 8:15 PM Description updated. First appearance in the feed. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

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		https://www.oracle.com/security-alerts/cspusep2026.html
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'}`