# CVE-2026-101439: Oracle Siebel CRM unauthorized data access in Cloud Manager

Source: https://junglewise.ai/threats/cve-2026-101439-vulnerability-in-the-siebel-crm-cloud-applications-product-of  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-20. Updated: 2026-10-20  
License: CC BY 4.0 with a link back

CVE-2026-101439 · Severity: medium · CVSS 5.9 · Published 2026-10-20

Oracle Siebel CRM is a cloud-based customer relationship management platform used by enterprises to manage customer data and interactions. An unauthenticated attacker can exploit a vulnerability in the Siebel Cloud Manager component via LDAP to gain unauthorized access to sensitive customer data without authentication. Successful exploitation allows an attacker to view or exfiltrate all data stored in the Siebel CRM Cloud Applications.

Technologies: [Oracle Siebel CRM Cloud Applications](https://junglewise.ai/threats/technologies/siebel-crm-cloud-applications). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-101439 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101439 being exploited in the wild.

**How severe is CVE-2026-101439?** Medium severity, with a CVSS score of 5.9, published 20 October 2026.

**Which products and versions are affected?** Oracle Siebel CRM Cloud Applications 22.3 through 26.9.

**Is there a fix for CVE-2026-101439?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-101439 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-101439?** Check whether you run Oracle Siebel CRM Cloud Applications at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An unauthenticated LDAP-based vulnerability in the Siebel Cloud Manager component allows network-based compromise of Siebel CRM Cloud Applications. The vulnerability has high attack complexity but requires no authentication or user interaction; successful exploitation results in unauthorized access to all accessible data in the CRM system. A fix is available in versions after 26.9.

## Affected products

- Oracle Siebel CRM Cloud Applications 22.3 through 26.9

## Timeline

- 2026-10-20: disclosed

## References

- [https://www.oracle.com/security-alerts/cpuoct2026.html](https://www.oracle.com/security-alerts/cpuoct2026.html)

## Related threats

- [Oracle Siebel CRM information disclosure in Cloud Manager](https://junglewise.ai/threats/cve-2026-91371-vulnerability-in-the-siebel-crm-cloud-applications-product-of)
- [Oracle Siebel CRM information disclosure in Cloud Manager](https://junglewise.ai/threats/cve-2026-91370-vulnerability-in-the-siebel-crm-cloud-applications-product-of)
- [Oracle Siebel CRM data integrity tampering in Cloud Manager](https://junglewise.ai/threats/cve-2026-91369-vulnerability-in-the-siebel-crm-cloud-applications-product-of)
- [Oracle Siebel CRM unauthorized data access in Cloud Manager](https://junglewise.ai/threats/cve-2026-91368-vulnerability-in-the-siebel-crm-cloud-applications-product-of)
- [Oracle Siebel CRM Cloud Applications privilege escalation in Cloud Manager](https://junglewise.ai/threats/cve-2026-91367-vulnerability-in-the-siebel-crm-cloud-applications-product-of)