CVE-2026-91266 Oracle Corporation CVE debrief

Who should care

Defenders responsible for JD Edwards EnterpriseOne Tools installations, particularly those with versions 9.2.0.0-9.2.26.5, should prioritize patching and verifying system configurations. Security teams and vulnerability management teams should also be aware of the potential impact and take necessary precautions.

Why it matters

A high-severity vulnerability in JD Edwards EnterpriseOne Tools requires immediate attention from defenders to prevent exploitation and potential data compromise.

• Potential unauthorized data creation, deletion, or modification
• Potential unauthorized access to critical data
• Need for patching and configuration verification
• Potential scope change impacting additional products

Technical summary

The vulnerability in JD Edwards EnterpriseOne Tools allows low-privileged attackers with logon access to compromise the system, potentially impacting additional products. Successful attacks can lead to unauthorized data creation, deletion, modification, and access. The vulnerability is in the Monitoring and Diagnostics SEC component of JD Edwards EnterpriseOne Tools. The CVSS 3.1 Base Score is 8.4, indicating high severity. Defenders should prioritize patching and verifying system configurations to prevent exploitation.

Defensive priority

Defenders should prioritize patching and verifying system configurations to prevent exploitation.

Recommended defensive actions

• Apply patches for JD Edwards EnterpriseOne Tools versions 9.2.0.0-9.2.26.5
• Verify system configurations to prevent exploitation
• Monitor for suspicious activity
• Review compensating controls for exposed systems
• 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
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD detail page provide information on the vulnerability, its impact, and affected versions. The vulnerability has a CVSS 3.1 Base Score of 8.4, indicating high severity. The CVSS Vector is (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N). The NVD entry is currently Undergoing Analysis. Defenders should verify system configurations and review compensating controls for exposed systems.

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.