CVE-2026-91289 Oracle Corporation CVE debrief

Who should care

Defenders responsible for JD Edwards EnterpriseOne Tools deployments, especially those with access to the physical communication segment, should assess exposure and verify patching to prevent potential unauthorized data access.

Why it matters

Defenders should care about CVE-2026-91289 because it allows an unauthenticated attacker to compromise JD Edwards EnterpriseOne Tools, potentially leading to unauthorized data access. Those responsible for deployments, especially with accessible physical communication segments, should assess exposure, verify patching for versions 9.2.0.0-9.2.26.5, and monitor for data access anomalies. Evidence from official sources supports these defensive priorities.

• Potential unauthorized access to critical data
• Need to verify patching status for affected versions
• Monitoring for potential data access anomalies

Technical summary

The vulnerability in JD Edwards EnterpriseOne Tools (component: Monitoring and Diagnostics SEC) allows an unauthenticated attacker with access to the physical communication segment to compromise the product, potentially leading to unauthorized access to critical data. The CVSS 3.1 Base Score is 5.3 (Confidentiality impacts). The vulnerability affects versions 9.2.0.0-9.2.26.5 of JD Edwards EnterpriseOne Tools. Defenders should assess exposure, verify patching status for affected versions, and monitor for potential data access anomalies.

Defensive priority

Medium priority for defenders to assess exposure and verify patching, given the potential for data access.

Recommended defensive actions

• Assess exposure of JD Edwards EnterpriseOne Tools in your environment
• Verify patching status for affected versions 9.2.0.0-9.2.26.5
• Monitor for potential unauthorized data access
• 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
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, its CVSS score, and potential impacts. Oracle's security alert also provides relevant information. Evidence from official sources supports defensive priorities. The vulnerability affects versions 9.2.0.0-9.2.26.5 of JD Edwards EnterpriseOne Tools. Defenders should verify patching status for these versions and monitor for data access anomalies.

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.