CVE-2016-8324 in FLEXCUBE Core Banking
Summary
by MITRE
Vulnerability in the Oracle FLEXCUBE Core Banking component of Oracle Financial Services Applications (subcomponent: Core). Supported versions that are affected are 5.1.0, 5.2.0 and 11.5.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle FLEXCUBE Core Banking. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle FLEXCUBE Core 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-2016-8324 resides within Oracle FLEXCUBE Core Banking component of Oracle Financial Services Applications, specifically within the Core subcomponent. This security flaw affects multiple supported versions including 5.1.0, 5.2.0, and 11.5.0, representing a significant risk to financial institutions utilizing these systems. The vulnerability operates at the application layer and demonstrates characteristics consistent with CWE-287 Authentication Issues, where insufficient authentication mechanisms allow unauthorized access to sensitive banking data. The CVSS v3.0 base score of 5.3 indicates a moderate severity level, though the potential impact on financial data confidentiality warrants immediate attention from security professionals.
The technical exploitation of this vulnerability occurs through unauthenticated network access via HTTP protocols, making it particularly dangerous as it requires minimal privileges for successful exploitation. Attackers can leverage this flaw without needing valid credentials, which aligns with ATT&CK technique T1190 Exploit Public-Facing Application, where adversaries target accessible network services to gain initial access. The vulnerability's design flaw allows for unauthorized read access to a subset of Oracle FLEXCUBE Core Banking accessible data, which typically includes sensitive customer information, transaction records, and financial data. This unauthorized data access represents a direct violation of data confidentiality principles and could enable further attacks through information gathering and reconnaissance activities.
The operational impact of CVE-2016-8324 extends beyond immediate data theft, potentially enabling more sophisticated attacks within the financial ecosystem. Organizations utilizing affected FLEXCUBE versions face risks of regulatory compliance violations, financial losses, and reputational damage when this vulnerability is exploited. The attack vector through HTTP protocols suggests that the vulnerability may be present in web-facing components or API endpoints that lack proper authentication mechanisms. This situation creates a pathway for attackers to systematically gather sensitive information from core banking systems, potentially leading to fraud, identity theft, or other financial crimes. The affected versions indicate that this vulnerability has existed for several years, highlighting the importance of regular security assessments and patch management processes.
Mitigation strategies for CVE-2016-8324 should prioritize immediate patching of affected Oracle FLEXCUBE versions through official Oracle security updates. Organizations must implement network segmentation to limit access to core banking applications and deploy web application firewalls to monitor and filter HTTP traffic. Access controls should be strengthened through proper authentication mechanisms and regular security audits to identify similar vulnerabilities. The implementation of security monitoring solutions can help detect unauthorized access attempts and provide early warning of potential exploitation. Additionally, organizations should conduct comprehensive vulnerability assessments to identify other potential weaknesses in their financial services infrastructure and ensure compliance with industry standards such as those outlined in the OWASP Top Ten and NIST cybersecurity frameworks. Regular security training for personnel handling financial data and implementing least privilege access principles can further reduce the risk surface associated with this and similar vulnerabilities.