CVE-2017-3236 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 require human interaction from a person other than the attacker and while the vulnerability is in Oracle FLEXCUBE Universal Banking, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle FLEXCUBE Universal Banking accessible data. CVSS v3.0 Base Score 4.7 (Integrity impacts).
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Analysis
by VulDB Data Team • 05/15/2026
The vulnerability identified as CVE-2017-3236 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 particular flaw manifests in the Core subcomponent of the FLEXCUBE Universal Banking system, affecting multiple version releases including 11.3.0, 11.4.0, 12.0.1, 12.0.2, 12.0.3, 12.1.0, and 12.2.0, making it a widespread concern across the financial services sector. The vulnerability operates at the network level through HTTP protocols, presenting a significant risk to organizations that rely on this banking infrastructure for their core operations.
The technical nature of this vulnerability stems from inadequate authentication mechanisms within the Oracle FLEXCUBE Universal Banking platform, allowing unauthenticated attackers to exploit the system without requiring valid credentials or prior access permissions. This represents a fundamental flaw in the application's security architecture where the system fails to properly validate user identities before granting access to sensitive data processing functions. The CVSS v3.0 base score of 4.7 indicates a moderate severity level, yet the integrity impact classification suggests that successful exploitation could lead to unauthorized modification of data within the system, potentially affecting the reliability and accuracy of financial records.
The operational impact of CVE-2017-3236 extends beyond the immediate compromise of the targeted FLEXCUBE system, as noted in the vulnerability description indicating potential influence on additional products within the Oracle Financial Services ecosystem. This cascading effect means that an attacker who successfully exploits this vulnerability could potentially affect interconnected systems and applications that rely on the same underlying infrastructure or data repositories. The requirement for human interaction from individuals other than the attacker suggests that social engineering or insider threat vectors might be leveraged in conjunction with this technical vulnerability, complicating the overall risk assessment and mitigation strategies.
Organizations implementing Oracle FLEXCUBE Universal Banking must recognize that this vulnerability creates a pathway for unauthorized update, insert, or delete operations against sensitive financial data, potentially compromising the integrity of transaction records, customer information, and other critical banking data. The attack vector through HTTP protocols indicates that organizations with exposed web services or public-facing interfaces are particularly vulnerable, as the attack can be executed remotely without requiring physical access or specialized network privileges. This vulnerability aligns with CWE-287, which addresses improper authentication issues, and represents a significant concern within the financial services industry where data integrity and security are paramount to regulatory compliance and customer trust.
Mitigation strategies for this vulnerability should include immediate implementation of network-level controls such as firewalls and access control lists to restrict HTTP access to the affected Oracle FLEXCUBE Universal Banking components. Organizations should also consider implementing robust monitoring and logging mechanisms to detect unauthorized access attempts or suspicious activities within their financial applications. The remediation process requires updating to patched versions of Oracle FLEXCUBE Universal Banking, as specified by Oracle's security advisories, while also ensuring that all related applications and systems are reviewed for potential secondary impacts. Additionally, organizations should conduct comprehensive security assessments to identify any other potential attack vectors that could be exploited in conjunction with this vulnerability, particularly those aligned with ATT&CK techniques involving credential access and privilege escalation.