Description
Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 22.3-26.9. Difficult to exploit vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Siebel CRM Cloud Applications executes to compromise Siebel CRM Cloud Applications. While the vulnerability is in Siebel CRM Cloud Applications, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM Cloud Applications accessible data as well as unauthorized read access to a subset of Siebel CRM Cloud Applications accessible data. CVSS 3.1 Base Score 4.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N).
Published: 2026-10-20
Score: 4.7 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Unauthorized data modification and read access
Action: Patch Update
AI Analysis

Impact

The flaw exists in the Siebel Cloud Manager component of Oracle Siebel CRM Cloud Applications and permits an attacker who has access to the physical communication segment where the application runs to bypass authentication controls. This breach enables the exploitation of insecure access control to insert, update, delete, and read stored data, thereby compromising the confidentiality and integrity of the application’s information. The vulnerability is an example of improper authorization (CWE-284).

Affected Systems

Oracle Corporation’s Siebel CRM Cloud Applications, versions 22.3 through 26.9, are affected. The issue was identified and documented in an Oracle security advisory and applies to all installations of the specified releases.

Risk and Exploitability

The CVSS base score of 4.7 reflects moderate severity, with low confidentiality and integrity impacts combined with an adjacency network attack vector, high attack complexity and no user interaction. The EPSS score indicates the probability of exploitation is below 1%, and the vulnerability not listed in the CISA KEV catalog, suggesting no widespread known exploitation. Nonetheless, the requirement for local network physical access means the risk is largely dependent on the host environment’s physical security posture and could enable scope changes to other Oracle products if privilege escalation occurs.

Generated by OpenCVE AI on October 22, 2026 at 08:12 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Siebel CRM Cloud Applications to a version newer than 26.9 that incorporates Oracle’s released fix
  • Limit physical connectivity to the network segment that links to the Siebel CRM Cloud Applications hardware so that only authorized personnel can access the local communication interface
  • Implement continuous log monitoring and audit trail analysis for unauthorized data modification or read events to detect exploit attempts early

Generated by OpenCVE AI on October 22, 2026 at 08:12 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Wed, 04 Nov 2026 14:30:00 +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

Thu, 22 Oct 2026 08:30:00 +0000

Type Values Removed Values Added
Title Unauthenticated Physical Access Enables Unauthorized Data Modification in Siebel CRM Cloud

Thu, 22 Oct 2026 01:45:00 +0000

Type Values Removed Values Added
Title Physical Network Access Enables Unauthorized Data Modification in Siebel CRM Cloud Applications

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

Type Values Removed Values Added
Title Physical Network Access Enables Unauthorized Data Modification in Siebel CRM Cloud Applications

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

Type Values Removed Values Added
Weaknesses CWE-284
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 Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 22.3-26.9. Difficult to exploit vulnerability allows unauthenticated attacker with access to the physical communication segment attached to the hardware where the Siebel CRM Cloud Applications executes to compromise Siebel CRM Cloud Applications. While the vulnerability is in Siebel CRM Cloud Applications, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Siebel CRM Cloud Applications accessible data as well as unauthorized read access to a subset of Siebel CRM Cloud Applications accessible data. CVSS 3.1 Base Score 4.7 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N).
First Time appeared Oracle
Oracle siebel Crm Cloud Applications
CPEs cpe:2.3:a:oracle:siebel_crm_cloud_applications:*:*:*:*:*:*:*:*
Vendors & Products Oracle
Oracle siebel Crm Cloud Applications
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N'}


Subscriptions

Oracle Siebel Crm Siebel Crm Cloud Applications
cve-icon MITRE

Status: PUBLISHED

Assigner: oracle

Published:

Updated: 2026-10-21T15:58:38.980Z

Reserved: 2026-09-14T22:10:16.630Z

Link: CVE-2026-91366

cve-icon Vulnrichment

Updated: 2026-10-21T15:58:32.852Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-20T22:20:39.470

Modified: 2026-11-04T14:18:16.760

Link: CVE-2026-91366

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-22T19:30:09Z

Weaknesses