CVE-2016-8307 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 read access to a subset of Oracle FLEXCUBE Universal Banking accessible data. CVSS v3.0 Base Score 5.3 (Confidentiality impacts).
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Analysis
by VulDB Data Team • 05/15/2026
The vulnerability identified as CVE-2016-8307 resides within Oracle FLEXCUBE Universal Banking, a critical component of Oracle Financial Services Applications that serves as the core banking platform for financial institutions worldwide. This specific flaw affects multiple versions including 11.3.0, 11.4.0, 12.0.1, 12.0.2, 12.0.3, 12.1.0, and 12.2.0, indicating a widespread impact across the FLEXCUBE product line. The vulnerability operates within the Core subcomponent, which forms the foundational architecture for banking operations and data management. The CVSS v3.0 base score of 5.3 reflects a medium severity classification, primarily due to confidentiality impacts that allow unauthorized access to sensitive financial data.
This vulnerability represents a significant security weakness that enables unauthenticated attackers to exploit network access through HTTP protocols without requiring valid credentials or prior authorization. The flaw essentially creates an entry point that bypasses normal authentication mechanisms, allowing malicious actors to directly access the banking application's data resources. The technical nature of this vulnerability suggests a misconfiguration or implementation flaw in the HTTP request handling or access control mechanisms within the FLEXCUBE Universal Banking platform. Attackers can leverage this weakness to perform unauthorized read operations against a subset of the accessible data, potentially compromising customer information, transaction records, or other sensitive banking data.
The operational impact of CVE-2016-8307 extends beyond simple data theft, as it represents a fundamental breach in the security architecture of financial institutions relying on FLEXCUBE Universal Banking. Organizations utilizing affected versions face the risk of exposing confidential customer information, transaction histories, and potentially sensitive financial data that could be used for fraudulent activities or financial crimes. The vulnerability's ease of exploitation means that even less sophisticated attackers can potentially compromise systems, making the impact more severe than initially apparent. Financial institutions using these versions are particularly vulnerable because the flaw affects the core banking functionality, potentially disrupting normal operations while simultaneously exposing critical data assets.
Security practitioners should recognize this vulnerability as aligning with CWE-287 (Improper Authentication) and potentially CWE-352 (Cross-Site Request Forgery) or CWE-20 (Improper Input Validation) depending on the specific implementation details. From an ATT&CK framework perspective, this vulnerability maps to T1190 (Exploit Public-Facing Application) and T1083 (File and Directory Discovery), as attackers can leverage the weakness to access sensitive data repositories. Mitigation strategies should include immediate patching of affected versions, implementation of network segmentation to limit access to the vulnerable components, and deployment of web application firewalls to monitor and filter HTTP traffic. Organizations should also conduct comprehensive vulnerability assessments to identify any additional exposure points and establish monitoring procedures to detect unauthorized access attempts. The vulnerability underscores the critical importance of maintaining up-to-date security patches and implementing robust access control measures in financial applications where data confidentiality is paramount.