# CVE-2026-101405: Oracle Siebel CRM Marketing unauthorized data access

Source: https://junglewise.ai/threats/cve-2026-101405-vulnerability-in-the-siebel-apps-marketing-product-of-oracle  
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-2026-101405 · Severity: medium · CVSS 4.8 · Published 2026-10-20

Oracle Siebel CRM's Marketing module is a customer relationship management tool used by enterprises to manage marketing campaigns and customer data. An unauthenticated attacker can exploit a difficult-to-exploit flaw over HTTPS to read, modify, or delete customer data stored in the Marketing application, compromising data confidentiality and integrity without requiring credentials.

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

## Quick answers

**Is CVE-2026-101405 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-101405 being exploited in the wild.

**How severe is CVE-2026-101405?** Medium severity, with a CVSS score of 4.8, published 20 October 2026.

**Which products and versions are affected?** Oracle Siebel CRM 17.0-26.9.

**Is there a fix for CVE-2026-101405?** 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-2026-101405 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-101405?** Check whether you run Oracle Siebel CRM 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 network vulnerability in the Siebel Apps Marketing component allows an attacker with network access via HTTPS to gain unauthorized read and write access to subset of application data. The vulnerability is marked as difficult to exploit, requiring specific preconditions. No authentication is required to attempt exploitation.

## Affected products

- Oracle Siebel CRM 17.0-26.9

## 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 Deployment privilege escalation in Server Infrastructure](https://junglewise.ai/threats/cve-2026-91446-vulnerability-in-the-siebel-crm-deployment-product-of-oracle)
- [Oracle Siebel CRM Financial Accounts unauthorized data access](https://junglewise.ai/threats/cve-2026-91430-vulnerability-in-the-siebel-apps-financial-services-product-of)
- [Oracle Siebel CRM Server Infrastructure privilege escalation](https://junglewise.ai/threats/cve-2026-91423-vulnerability-in-the-siebel-crm-deployment-product-of-oracle)
- [Oracle Siebel CRM information disclosure in Management Console](https://junglewise.ai/threats/cve-2026-101448-vulnerability-in-the-siebel-crm-deployment-product-of-oracle)
- [Oracle Siebel CRM Apps - Marketing cross-site request forgery in Email Marketing](https://junglewise.ai/threats/cve-2026-101408-vulnerability-in-the-siebel-apps-marketing-product-of-oracle)