CVE-2026-91288 in JD Edwards EnterpriseOne Tools
Summary
by MITRE • 10/21/2026
Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Interoperability SEC). Supported versions that are affected are 9.2.0.0-9.2.26.5. Difficult to exploit vulnerability allows unauthenticated attacker with network access via JDENET to compromise JD Edwards EnterpriseOne Tools. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all JD Edwards EnterpriseOne Tools accessible data as well as unauthorized access to critical data or complete access to all JD Edwards EnterpriseOne Tools accessible data. CVSS 3.1 Base Score 7.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Interoperability SEC component of Oracle JD Edwards EnterpriseOne Tools, specifically affecting supported versions ranging from 9.2.0.0 through 9.2.26.5. This security flaw is categorized as a complex authentication bypass or improper access control issue that allows an unauthenticated attacker to compromise the integrity and confidentiality of the system data. The attack vector leverages JDENET, which is Oracle’s proprietary network protocol used for communication between clients and servers in the JD Edwards environment. Because the vulnerability permits exploitation by attackers with only network access and no prior authentication credentials, it represents a significant risk to organizations relying on this enterprise resource planning platform for critical business operations. The difficulty of exploitation suggests that while automated remote exploits may be challenging to develop successfully due to specific environmental requirements or complex trigger conditions, successful manual exploitation can lead to severe consequences.
From a technical perspective, the flaw likely involves insufficient validation of incoming requests within the Interoperability SEC module before they are processed by the core application logic. This allows an external actor to manipulate data structures or command sequences that bypass standard security checks. The impact is twofold, affecting both confidentiality and integrity as indicated by the CVSS 3.1 base score of 7.4. Unauthorized actors can create, delete, or modify critical business data, which directly impacts operational continuity and financial accuracy. Furthermore, the ability to gain unauthorized access to all accessible data means that sensitive information such as customer records, employee details, and proprietary intellectual property could be exfiltrated. This aligns with CWE-287 Improper Authentication and CWE-922 Insecure Storage of Sensitive Information if the data is exposed in transit or at rest due to the breach. The lack of availability impact suggests that while data integrity is compromised, the system itself may remain operational, although its trustworthiness is entirely voided once exploited.
The strategic implications for enterprise security are substantial given the widespread adoption of JD Edwards among large organizations. An attacker with network access could potentially use this vulnerability as a foothold to pivot into other parts of the internal network if lateral movement capabilities exist within the compromised environment. This scenario maps closely to MITRE ATT&CK techniques such as T1078 Valid Accounts, although in this case, it is an unauthenticated bypass that effectively grants valid account privileges without proper credentials. It also relates to T1530 Data from Cloud Storage Object if sensitive data is accessed and exfiltrated via cloud-based storage mechanisms often integrated with JD Edwards. The high confidentiality impact underscores the need for immediate remediation, as regulatory compliance frameworks like GDPR or HIPAA may be violated depending on the nature of the exposed data.
Mitigation strategies must prioritize applying the latest security patches provided by Oracle to update the Interoperability SEC component to a version beyond 9.2.26.5 where this flaw is resolved. In environments where patching cannot be immediately implemented, network segmentation should be enforced to restrict JDENET traffic to only authorized client IP addresses and subnets. Implementing strict firewall rules that limit exposure of the JD Edwards ports to trusted internal networks rather than public internet interfaces can significantly reduce the attack surface. Additionally, deploying intrusion detection systems configured with signatures for known exploitation patterns related to JDENET anomalies may help in identifying attempted attacks early. Regular audits of access logs and monitoring for unusual data modification or deletion activities are essential for detecting potential breaches resulting from this vulnerability. Organizations should also review their overall authentication policies to ensure that no legacy protocols bypassing modern security standards remain active, thereby reducing the likelihood of similar vulnerabilities being exploited in other components.