CVE-2026-91304 in JD Edwards EnterpriseOne Tools
Summary
by MITRE • 10/21/2026
Vulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Installation Security). Supported versions that are affected are 9.2.0.0-9.2.26.5. Easily exploitable vulnerability allows unauthenticated attacker with logon to the infrastructure where JD Edwards EnterpriseOne Tools executes to compromise JD Edwards EnterpriseOne Tools. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in takeover of JD Edwards EnterpriseOne Tools. CVSS 3.1 Base Score 7.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 10/21/2026
The identified vulnerability resides within the Installation Security component of Oracle JD Edwards EnterpriseOne Tools, specifically affecting versions ranging from 9.2.0.0 through 9.2.26.5. This flaw represents a critical security deficiency that undermines the integrity and confidentiality of the enterprise resource planning infrastructure. The core technical issue involves an authentication bypass or improper access control mechanism within the installation utilities, which allows for unauthorized manipulation of system configurations or execution of arbitrary code under specific conditions. Although the vulnerability is classified as easily exploitable by an attacker who has already established a logon session on the underlying operating system where JD Edwards EnterpriseOne Tools executes, it introduces a significant lateral movement risk. The presence of this flaw means that any user account with local access to the server hosting the application can potentially escalate privileges or alter critical security settings without proper authorization checks.
The operational impact of exploiting this vulnerability is severe, as indicated by its CVSS 3.1 base score of 7.8, which denotes a high severity level. The vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) reveals that while the attack requires local network access and low complexity, it notably demands human interaction from a user other than the attacker to trigger the exploit chain effectively. This social engineering aspect suggests that the vulnerability may involve deceptive prompts or configuration changes that require an administrator or authorized personnel to approve actions that inadvertently disable security controls or install malicious components. Once exploited, the consequences are catastrophic for the affected environment, resulting in complete takeover of JD Edwards EnterpriseOne Tools. This compromise impacts all three pillars of the CIA triad: confidentiality is breached as sensitive business data becomes accessible to unauthorized parties; integrity is compromised as system configurations and application logic can be altered arbitrarily; and availability is threatened through potential denial-of-service conditions or corruption of critical files necessary for operation.
From a classification perspective, this vulnerability aligns with CWE-269 Improper Privilege Management and potentially CWE-78 OS Command Injection if the installation process allows arbitrary command execution during setup phases. In terms of adversary tactics, it maps to MITRE ATT&CK techniques such as T1053 Scheduled Task/Job or T1136 Create Account, depending on how the takeover is achieved within the environment. The requirement for human interaction places this in a unique category where traditional automated exploitation tools may fail without careful orchestration of user engagement. Attackers could leverage phishing campaigns targeting system administrators to trick them into running compromised installation scripts or approving malicious configuration updates that exploit this flaw.
Mitigation strategies must focus on immediate patching and strict access control enforcement. Oracle has released patches for the affected versions, and organizations should prioritize applying these updates as soon as possible to close the security gap. In addition to patching, it is crucial to enforce the principle of least privilege by ensuring that only a minimal number of trusted individuals have local administrative rights on servers hosting JD Edwards EnterpriseOne Tools. Multi-factor authentication should be implemented for all administrative access points to reduce the risk of credential theft leading to initial logon. Furthermore, organizations should implement robust monitoring and logging mechanisms to detect unusual activities during installation or configuration changes, such as unexpected privilege escalations or modifications to security policies. Regular audits of user permissions and review of installation logs can help identify potential exploitation attempts before they result in a full system compromise.