Quick answers
- Is CVE-2026-83183 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-83183 being exploited in the wild.
- How severe is CVE-2026-83183?
- High severity, with a CVSS score of 7.5, published 15 September 2026.
- Which products and versions are affected?
- Oracle Siebel CRM Deployment 17.0-26.7.
- Is there a fix for CVE-2026-83183?
- 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.
- Am I affected by CVE-2026-83183?
- Check whether you run Oracle Siebel CRM or Oracle Siebel CRM Deployment 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 denial-of-service vulnerability in the Server Infrastructure component of Siebel CRM Deployment, reachable via HTTP without authentication or user interaction required. The vulnerability allows an unauthenticated network attacker to send specially crafted HTTP requests that trigger a hang or repeatable crash in the affected service. The root cause appears to be improper request handling in the HTTP interface. Successful exploitation results in complete unavailability (DoS) of the Siebel CRM Deployment system. Affected versions are 17.0 through 26.7; patches from Oracle are expected to be available.
Affected products
- Oracle Siebel CRM Deployment 17.0-26.7
Timeline
- 2026-09-15: disclosed