CVE-2026-91293 in JD Edwards EnterpriseOne Tools
Summary
by MITRE • 10/21/2026
Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Business Logic Infra SEC). Supported versions that are affected are 9.2.0.0-9.2.26.5. Easily exploitable vulnerability allows low privileged attacker with network access via JDENET to compromise JD Edwards EnterpriseOne Tools. Successful attacks of this vulnerability can result in unauthorized read access to a subset of JD Edwards EnterpriseOne Tools accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of JD Edwards EnterpriseOne Tools. CVSS 3.1 Base Score 5.4 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L).
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Analysis
by VulDB Data Team • 10/22/2026
The identified vulnerability resides within the Business Logic Infrastructure Security 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 characterized by an easily exploitable condition that permits a low-privileged attacker to compromise the integrity and confidentiality of the application environment. The attack vector leverages network access via JDENET, which serves as the primary communication protocol for client-server interactions within the JD Edwards architecture. Because the vulnerability requires only low privileges on the target system, it significantly lowers the barrier to entry for malicious actors who may have already gained a foothold in the local network or possess valid but limited user credentials. The presence of this flaw indicates a deficiency in how the application handles authentication checks and input validation within its business logic layer when processing requests over JDENET connections.
From a technical perspective, the vulnerability manifests through two distinct impact vectors: unauthorized data access and service disruption. On one hand, attackers can exploit the flaw to gain read access to a subset of accessible data within JD Edwards EnterpriseOne Tools. This represents a breach of confidentiality where sensitive business information, potentially including financial records or customer details, is exposed without proper authorization controls being enforced correctly during request processing. On the other hand, the vulnerability allows for partial denial of service conditions. By sending specific malformed or resource-intensive requests via JDENET, an attacker can cause the application to become unresponsive or crash partially, thereby disrupting business operations and reducing system availability. This dual nature of the flaw means that it poses both a data privacy risk and an operational stability risk simultaneously.
The classification of this vulnerability aligns with several industry-standard frameworks that help contextualize its severity and remediation requirements. In terms of Common Weakness Enumeration (CWE), this issue likely corresponds to CWE-287, which describes Improper Authentication, as the low-privileged attacker is able to bypass expected access controls. Additionally, aspects of the vulnerability may relate to CWE-400, Uncontrolled Resource Consumption, given the potential for causing a denial of service through resource exhaustion or application instability. Within the MITRE ATT&CK framework, this behavior maps to techniques such as T1078, Valid Accounts, since exploitation relies on low-privileged credentials, and potentially T1529, System Shutdown or Reboot, if the partial denial of service involves crashing services. The CVSS 3.1 base score of 5.4 reflects a medium severity level, driven by network accessibility, low attack complexity, no user interaction required, and limited scope with impacts on both confidentiality and availability but not integrity.
To mitigate this vulnerability, organizations running affected versions must prioritize the application of Oracle-supplied security patches or updates that address the specific flaw in the Business Logic Infrastructure Security component. It is critical to verify that all JD Edwards EnterpriseOne Tools instances within the environment are updated to a version beyond 9.2.26.5 where these issues have been resolved. In addition to patching, implementing network segmentation strategies can help limit exposure by restricting JDENET traffic to only authorized subnets and hosts. Furthermore, enforcing strict access control policies ensures that even if an attacker gains low-level credentials, their ability to interact with the vulnerable component is minimized through principle of least privilege enforcement. Continuous monitoring for anomalous JDENET activity patterns indicative of exploitation attempts should also be implemented as a compensating control while patching efforts are underway.