CVE-2026-91304 Oracle Corporation CVE debrief

Who should care

System administrators, security teams, and IT professionals responsible for JD Edwards EnterpriseOne Tools installations should assess exposure and apply necessary patches or updates.

Why it matters

CVE-2026-91304 is a high-severity vulnerability in JD Edwards EnterpriseOne Tools that requires immediate attention for assessment and patching to prevent potential takeover and unauthorized access.

• Potential takeover of JD Edwards EnterpriseOne Tools requires immediate attention to prevent unauthorized access.
• Human interaction requirements must be verified to prevent exploitation.
• Successful attacks can result in confidentiality, integrity, and availability impacts.
• Patch management and system updates are crucial to mitigate the vulnerability.

Technical summary

The vulnerability in JD Edwards EnterpriseOne Tools (component: Installation Security) allows unauthenticated attackers with logon access to compromise the system. Successful attacks require human interaction and can result in takeover of JD Edwards EnterpriseOne Tools. The CVSS 3.1 Base Score is 7.8 (Confidentiality, Integrity and Availability impacts). This vulnerability affects versions 9.2.0.0-9.2.26.5 of JD Edwards EnterpriseOne Tools, and defenders should focus on patch management and system updates to mitigate the vulnerability.

Defensive priority

Immediate attention is required to assess exposure and apply patches for JD Edwards EnterpriseOne Tools versions 9.2.0.0-9.2.26.5.

Recommended defensive actions

• Assess exposure of JD Edwards EnterpriseOne Tools versions 9.2.0.0-9.2.26.5 in your environment.
• Apply patches or updates provided by Oracle to mitigate the vulnerability.
• Monitor systems for signs of potential unauthorized access or malicious activity.
• Verify that human interaction requirements are met to prevent exploitation.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, its impacts, and affected versions. Oracle's security alert documentation is referenced for further information. The vulnerability has a CVSS 3.1 Base Score of 7.8, indicating high severity. Affected versions of JD Edwards EnterpriseOne Tools are from 9.2.0.0 to 9.2.26.5. Defenders should verify the presence of these versions in their environment and apply patches or updates provided by Oracle. The CVE Program and NVD entries offer additional context on the source-prov

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.