# CVE-2026-91326: Oracle JD Edwards EnterpriseOne Tools installation security takeover

Source: https://junglewise.ai/threats/cve-2026-91326-vulnerability-in-the-jd-edwards-enterpriseone-tools-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-2026-91326 · Severity: high · CVSS 8.8 · Published 2026-10-20

Oracle JD Edwards EnterpriseOne Tools is enterprise resource planning software used for financial and operational management across organizations. An unauthenticated attacker with physical access to the network segment where the software runs can take complete control of the system through a flaw in installation security, with the potential to compromise related systems and business processes.

Technologies: [Oracle JD Edwards EnterpriseOne Tools](https://junglewise.ai/threats/technologies/jd-edwards-enterpriseone-tools). Vendors: [Oracle](https://junglewise.ai/threats/vendors/oracle).

## Quick answers

**Is CVE-2026-91326 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-91326 being exploited in the wild.

**How severe is CVE-2026-91326?** High severity, with a CVSS score of 8.8, published 20 October 2026.

**Which products and versions are affected?** Oracle JD Edwards EnterpriseOne Tools 9.2.0.0 through 9.2.26.4.

**Is there a fix for CVE-2026-91326?** 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-2026-91326 attacked?** It is attacked from the adjacent network.

**Am I affected by CVE-2026-91326?** Check whether you run Oracle JD Edwards EnterpriseOne Tools 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

The vulnerability is in the installation security component of JD Edwards EnterpriseOne Tools, affecting versions 9.2.0.0 through 9.2.26.4. Exploitation requires physical adjacency to the network segment, no authentication, and user interaction from another party; successful attacks result in complete system takeover with scope change affecting dependent products.

## Affected products

- Oracle JD Edwards EnterpriseOne Tools 9.2.0.0 through 9.2.26.4

## 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 JD Edwards EnterpriseOne Tools CSRF vulnerability](https://junglewise.ai/threats/cve-2026-91455-vulnerability-in-the-jd-edwards-enterpriseone-tools-product-of)
- [Oracle JD Edwards EnterpriseOne Tools unauthorized data access in Web Runtime SEC](https://junglewise.ai/threats/cve-2026-91384-vulnerability-in-the-jd-edwards-enterpriseone-tools-product-of)
- [Oracle JD Edwards EnterpriseOne Tools unauthorized data access in Monitoring and Diagnostics](https://junglewise.ai/threats/cve-2026-91383-vulnerability-in-the-jd-edwards-enterpriseone-tools-product-of)
- [Oracle JD Edwards EnterpriseOne Tools privilege escalation in Installation Security](https://junglewise.ai/threats/cve-2026-91329-vulnerability-in-the-jd-edwards-enterpriseone-tools-product-of)
- [Oracle JD Edwards EnterpriseOne Tools privilege escalation in Deployment SEC](https://junglewise.ai/threats/cve-2026-91328-vulnerability-in-the-jd-edwards-enterpriseone-tools-product-of)