CVE-2026-87403 in Applications DBA
Summary
by MITRE • 10/21/2026
Vulnerability in the Applications DBA product of Oracle E-Business Suite (component: AD Utilities). Supported versions that are affected are 12.2.3-12.2.15. Easily exploitable vulnerability allows low privileged attacker with logon to the infrastructure where Applications DBA executes to compromise Applications DBA. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Applications DBA accessible data as well as unauthorized access to critical data or complete access to all Applications DBA accessible data. CVSS 3.1 Base Score 7.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:L/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 AD Utilities component of Oracle E-Business Suite Applications DBA, specifically affecting supported versions ranging from 12.2.3 through 12.2.15. This security flaw represents a significant risk to organizations relying on this enterprise resource planning platform for critical business operations. The core issue stems from insufficient access control mechanisms within the AD Utilities module, which is responsible for managing database administration tasks and system maintenance activities. Because these utilities operate with elevated privileges relative to standard application users, any weakness in their input validation or permission checks can lead to severe security breaches.
The technical nature of this vulnerability allows a low-privileged attacker who has valid logon credentials to the infrastructure where Applications DBA executes to compromise the integrity and confidentiality of the system. The exploitation does not require user interaction or complex social engineering, as indicated by the absence of UI requirements in the CVSS vector. Instead, an authenticated attacker can leverage their existing access level to trigger specific actions within the AD Utilities that bypass intended security boundaries. This capability effectively elevates the attacker's privileges beyond what was originally granted, allowing them to interact with system components they should not have access to under normal operational circumstances.
The operational impact of this vulnerability is substantial, primarily affecting data confidentiality and integrity while leaving availability largely intact according to the provided CVSS metrics. Successful exploitation enables unauthorized creation, deletion, or modification of critical data stored within the Applications DBA accessible scope. This means that sensitive business information, financial records, customer details, and other proprietary data can be altered, destroyed, or exfiltrated without authorization. The ability to modify critical data poses a direct threat to regulatory compliance and operational continuity, as corrupted databases can lead to incorrect reporting, failed transactions, and loss of trust among stakeholders.
From an industry standard perspective, this vulnerability aligns with CWE-269, which describes Improper Privilege Management, where the software does not properly assign privileges or roles to actors. It also relates closely to CWE-862, Missing Authorization, as the system fails to enforce proper access controls for specific actions performed by authenticated users. In terms of attack vectors and tactics, this scenario maps to MITRE ATT&CK techniques involving Initial Access through valid accounts followed by Privilege Escalation or Defense Evasion depending on how the AD Utilities are leveraged to maintain persistence or hide malicious activities within legitimate administrative logs.
Mitigation strategies must focus on both immediate remediation and long-term security hardening. The primary recommendation is to apply the latest available patches from Oracle that address this specific flaw in the AD Utilities component for all affected versions between 12.2.3 and 12.2.15. Organizations should prioritize patching systems where Applications DBA executes, especially those exposed to internal networks or remote access points. Additionally, implementing strict network segmentation can limit lateral movement opportunities for attackers who have already gained initial footholds through low-privileged accounts.
Beyond patching, security teams should review and restrict the permissions granted to users with logon capabilities on infrastructure hosting Applications DBA components. Principle of least privilege dictates that only essential personnel involved in database administration should possess access to these utilities, and even then, their rights should be minimized to the absolute minimum required for job functions. Regular auditing of administrative actions performed via AD Utilities can help detect anomalous behavior indicative of exploitation attempts. Furthermore, enforcing multi-factor authentication for all privileged accounts adds a critical layer of defense against credential-based attacks that might precede this vulnerability's exploitation.