CVE-2026-70859: Oracle Siebel CRM Integration privilege escalation in REST

CVE-2026-70859 · Severity: high · CVSS 8.5 · Published 2026-08-18

Oracle Siebel CRM Integration is a core component of Siebel CRM that handles API communication. A low-privileged attacker with network access can exploit a difficult-to-exploit vulnerability in the REST component to gain complete control of the Siebel CRM Integration system, potentially compromising customer data and business operations across integrated systems.

Technologies: Oracle Siebel CRM, Oracle Siebel CRM Integration. Vendors: Oracle.

Quick answers

Is CVE-2026-70859 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-70859 being exploited in the wild.
How severe is CVE-2026-70859?
High severity, with a CVSS score of 8.5, published 18 August 2026.
Which products and versions are affected?
Oracle Siebel CRM Integration 17.0–26.6.
Is there a fix for CVE-2026-70859?
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-2026-70859 attacked?
It is attacked over the network.
Am I affected by CVE-2026-70859?
Check whether you run Oracle Siebel CRM or Oracle Siebel CRM Integration 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

This is a privilege escalation vulnerability in the REST component of Oracle Siebel CRM Integration affecting versions 17.0 through 26.6. The vulnerability requires low privileges and network access via HTTP, but is difficult to exploit (high attack complexity). Successful exploitation allows an attacker to achieve complete system compromise (confidentiality, integrity, and availability impacts) with scope change, meaning the attack can impact other connected systems beyond Siebel CRM Integration itself. No public exploit evidence is known at this time.

Affected products

  • Oracle Siebel CRM Integration 17.0–26.6

Timeline

  • 2026-08-18: disclosed

References

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