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 low privileged attacker with network access via HTTP to compromise Siebel CRM End User. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM End User accessible data as well as unauthorized read access to a subset of Siebel CRM End User accessible data. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N).
Published: 2026-10-20
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized Data Modification and Read
Action: Apply Patch
AI Analysis

Impact

A vulnerability exists in the Open UI component of Oracle Siebel CRM End User that permits a low‑privileged attacker with network access over HTTP to perform unauthorized updates, inserts, or deletes of certain CRM data, as well as read restricted data, thereby breaching confidentiality and integrity. The CVE description does not state the root cause explicitly, but the nature of the impact suggests an access control issue; this inference is drawn from the limited privileges accessed.

Affected Systems

Oracle Corporation’s Siebel CRM End User product, versions 17.0 through 26.9, is affected. The issue targets the Open UI component accessed via standard HTTP interfaces.

Risk and Exploitability

The CVSS v3.1 score of 5.4 reflects moderate severity with compromise of confidentiality and integrity. No EPSS score is available and the vulnerability is not listed in CISA KEV, but the attack vector is network‑based HTTP, requiring only low privileges. Given the lack of mitigation published beyond patching, the risk remains significant for environments exposing Siebel CRM to external traffic.

Generated by OpenCVE AI on October 21, 2026 at 13:59 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the official Oracle security patch or upgrade to a version released in the October 2026 Critical Patch Update
  • Restrict HTTP access to the Siebel CRM End User by configuring firewall rules to allow only trusted IP ranges
  • Disable the Open UI component or enforce strict authentication if it is not required for business operations

Generated by OpenCVE AI on October 21, 2026 at 13:59 UTC.

Tracking

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Advisories

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History

Wed, 04 Nov 2026 17:30:00 +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

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

Type Values Removed Values Added
Title Unauthorized Data Modification and Read via HTTP in Siebel CRM End User
Weaknesses CWE-284
CWE-285
Metrics ssvc

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


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 low privileged attacker with network access via HTTP to compromise Siebel CRM End User. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM End User accessible data as well as unauthorized read access to a subset of Siebel CRM End User accessible data. CVSS 3.1 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}


Subscriptions

Oracle Siebel Crm Siebel Crm End User
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-21T15:24:19.145Z

Reserved: 2026-09-14T22:10:16.631Z

Link: CVE-2026-91387

cve-icon Vulnrichment

Updated: 2026-10-21T15:24:09.521Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T22:20:41.930

Modified: 2026-11-04T17:18:59.200

Link: CVE-2026-91387

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-21T19:30:07Z

Weaknesses