Quick answers
- Is CVE-2026-91424 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91424 being exploited in the wild.
- How severe is CVE-2026-91424?
- Medium severity, with a CVSS score of 6.4, published 20 October 2026.
- Which products and versions are affected?
- Oracle Siebel CRM Deployment 17.0 to 26.9.
- Is there a fix for CVE-2026-91424?
- 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-2026-91424 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-91424?
- Check whether you run 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
A difficult-to-exploit vulnerability in the Server Infrastructure component of Oracle Siebel CRM Deployment allows an authenticated network attacker via HTTP to trigger denial of service conditions or unauthorized data access. The attack requires low-privilege credentials and complex exploitation conditions (high attack complexity), but success results in service availability impact (complete denial of service), limited confidentiality impact (unauthorized read access to a subset of data), and integrity impact (unauthorized insert, update, delete operations).
Affected products
- Oracle Siebel CRM Deployment 17.0 to 26.9
Timeline
- 2026-10-20: disclosed