CVE-2026-101645 in iSetup
Summary
by MITRE • 10/21/2026
Vulnerability in the Oracle iSetup product of Oracle E-Business Suite (component: General Ledger Update Transform, Reports). Supported versions that are affected are 12.2.3-12.2.15. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle iSetup. Successful attacks of this vulnerability can result in takeover of Oracle iSetup. CVSS 3.1 Base Score 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/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 Oracle iSetup component of Oracle E-Business Suite, specifically affecting the General Ledger Update Transform and Reports functionality across supported versions ranging from 12.2.3 to 12.2.15. This security flaw represents a critical risk vector for organizations relying on this enterprise resource planning software for financial data management and reporting. The core of the issue lies in how the application processes incoming HTTP requests related to general ledger transformations, where insufficient validation or improper handling of input parameters allows an attacker to execute unauthorized operations within the context of the iSetup service.
From a technical perspective, the vulnerability is characterized by its difficulty to exploit, which suggests that while it requires specific conditions or precise sequencing of actions to succeed, it does not rely on complex user interaction or social engineering tactics. The attack vector is network-based via HTTP, meaning an attacker positioned within reach of the target system's network can initiate the exploitation process without needing physical access or local account privileges on the server itself. Although the vulnerability requires low-privileged authentication to trigger, this requirement often reflects a design flaw where sensitive administrative functions are accessible through standard user-level credentials rather than being restricted strictly to high-elevation accounts with multi-factor verification.
The operational impact of successfully exploiting this vulnerability is severe, resulting in complete takeover of the Oracle iSetup application environment. This level of compromise grants the attacker extensive control over the affected subsystems, enabling them to manipulate financial data, exfiltrate sensitive accounting information, or disrupt critical business operations. The CVSS 3.1 base score of 7.5 reflects high impacts on confidentiality, integrity, and availability. Specifically, an attacker could read confidential general ledger data, modify transaction records to conceal fraudulent activities, or cause denial-of-service conditions that halt financial reporting capabilities for the organization.
In terms of industry-standard classification frameworks, this vulnerability aligns with CWE-20 Improper Input Validation, as the root cause typically involves failing to adequately sanitize or verify user-supplied input before processing it within critical business logic. Furthermore, from a tactical standpoint related to the MITRE ATT&CK framework, exploitation would likely fall under techniques associated with Initial Access and Privilege Escalation, particularly those involving web application attacks such as SQL injection or cross-site scripting if applicable, though the specific mechanism depends on the underlying code flaw. The ability for low-privileged users to achieve full administrative control highlights a significant failure in principle of least privilege implementation within the iSetup architecture.
Mitigation strategies must prioritize immediate patching by applying the latest security updates provided by Oracle for versions 12.2.3 through 12.2.15. Organizations should verify their current version and apply the relevant interim patches or critical patch updates as soon as possible to close this exposure window. In addition to software remediation, network segmentation plays a crucial role in reducing risk; ensuring that Oracle E-Business Suite instances are not directly exposed to untrusted networks via HTTP is essential. Implementing reverse proxies with strict access controls and enforcing HTTPS for all communications can further mitigate the attack surface by encrypting data in transit and restricting direct server exposure.
Security teams should also review authentication policies associated with iSetup, ensuring that administrative functions require stronger verification methods beyond simple low-privileged credentials. Regular vulnerability scanning focused on web application vulnerabilities within the E-Business Suite environment is recommended to detect similar misconfigurations or unpatched flaws across other components. Monitoring logs for unusual HTTP request patterns targeting general ledger transform endpoints can provide early detection of exploitation attempts, allowing for rapid incident response before full system compromise occurs.