CVE-2016-8310 in FLEXCUBE Universal Banking
Summary
by MITRE
Vulnerability in the Oracle FLEXCUBE Universal Banking component of Oracle Financial Services Applications (subcomponent: Core). Supported versions that are affected are 11.3.0, 11.4.0, 12.0.1, 12.0.2, 12.0.3, 12.1.0 and 12.2.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle FLEXCUBE Universal Banking. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle FLEXCUBE Universal Banking accessible data as well as unauthorized read access to a subset of Oracle FLEXCUBE Universal Banking accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle FLEXCUBE Universal Banking. CVSS v3.0 Base Score 7.3 (Confidentiality, Integrity and Availability impacts).
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Analysis
by VulDB Data Team • 05/15/2026
The vulnerability identified as CVE-2016-8310 affects Oracle FLEXCUBE Universal Banking, a critical component within Oracle Financial Services Applications that serves as the core banking platform for financial institutions worldwide. This vulnerability resides within the Core subcomponent of the FLEXCUBE Universal Banking system and impacts multiple supported versions including 11.3.0, 11.4.0, 12.0.1, 12.0.2, 12.0.3, 12.1.0, and 12.2.0. The flaw represents a significant security weakness that directly compromises the integrity and confidentiality of financial data processing systems. The vulnerability's classification as easily exploitable indicates that attackers can leverage it without requiring specialized skills or extensive preparation, making it particularly dangerous in production environments where financial institutions rely on continuous system availability and data protection. The CVSS v3.0 base score of 7.3 reflects a high severity level that encompasses impacts to confidentiality, integrity, and availability, with the potential for unauthorized access to sensitive financial information and disruption of critical banking services.
The technical implementation of this vulnerability stems from insufficient authentication mechanisms within the HTTP interface of the Oracle FLEXCUBE Universal Banking system. Attackers can exploit this weakness by establishing network connections through HTTP protocols without requiring valid credentials or authentication tokens, which violates fundamental security principles of access control and identity verification. This unauthenticated access pathway creates a direct attack surface that allows malicious actors to manipulate the underlying banking application through unauthorized update, insert, or delete operations on database records. The vulnerability specifically targets the Core subcomponent, which likely handles fundamental banking transactions and data management functions, making the potential impact particularly severe for financial institutions. The flaw's presence in multiple versions suggests it represents a persistent architectural weakness rather than a simple patchable bug, indicating that organizations using any of these affected versions face immediate risk. The vulnerability's classification under CWE (Common Weakness Enumeration) would likely align with CWE-287, which addresses improper authentication issues, or potentially CWE-312, focusing on cleartext storage of sensitive information.
The operational impact of CVE-2016-8310 extends beyond simple data theft to encompass comprehensive system compromise that can severely disrupt financial operations. Successful exploitation enables attackers to perform unauthorized modifications to customer accounts, transaction records, and system configurations, potentially leading to financial losses, regulatory violations, and reputational damage. The ability to execute unauthorized read operations on data subsets means that sensitive customer information, transaction histories, and system configurations could be accessed without detection, creating opportunities for identity theft, fraud, and competitive intelligence gathering. Partial denial of service capabilities pose additional risks as attackers could potentially disrupt critical banking functions, affecting customer service availability and operational continuity. Financial institutions utilizing affected FLEXCUBE versions face the risk of unauthorized transactions being processed, legitimate user access being impeded, and system integrity being compromised through unauthorized modifications. The vulnerability's impact on availability through partial denial of service could particularly affect high-volume transaction processing systems where even temporary disruptions can result in significant financial losses and customer dissatisfaction.
Organizations should implement immediate mitigations to address this vulnerability, beginning with network-level restrictions that limit access to the affected HTTP interfaces to trusted networks and authorized personnel only. The implementation of robust authentication mechanisms and the enforcement of strong access controls should be prioritized to prevent unauthorized access attempts. Regular security assessments and penetration testing should be conducted to identify additional vulnerabilities in the FLEXCUBE Universal Banking environment and ensure that security controls remain effective. System administrators should monitor network traffic for suspicious access patterns and implement intrusion detection systems that can identify exploitation attempts. The affected versions should be prioritized for patching or upgrading to supported releases that contain fixes for this vulnerability, with organizations maintaining careful rollback procedures to ensure business continuity during the update process. Compliance with industry standards such as those outlined in the ATT&CK framework, particularly those related to credential access and privilege escalation, should be considered when developing mitigation strategies. Regular security training for personnel who interact with the FLEXCUBE system should emphasize the importance of maintaining secure access practices and recognizing potential exploitation attempts. Organizations should also consider implementing additional monitoring and logging mechanisms to detect unauthorized access attempts and maintain audit trails for regulatory compliance and forensic analysis purposes.