CVE-2026-87226 in Hyperion Financial Management
Summary
by MITRE • 09/16/2026
Vulnerability in the Oracle Hyperion Financial Management product of Oracle Hyperion (component: Security). The supported version that is affected is 11.2.26.0.000. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle Hyperion Financial Management. Successful attacks of this vulnerability can result in takeover of Oracle Hyperion Financial Management. CVSS 3.1 Base Score 8.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 09/16/2026
The identified vulnerability resides within the Security component of Oracle Hyperion Financial Management version 11.2.26.0.000, representing a critical security flaw that undermines the integrity and confidentiality of financial data processing systems. This specific iteration of the software is susceptible to an easily exploitable attack vector that requires low-privileged access over HTTP network connections. The nature of this vulnerability allows an attacker with minimal initial privileges to escalate their rights significantly, ultimately leading to complete control over the Oracle Hyperion Financial Management application environment. Such a compromise poses severe risks to organizations relying on this platform for critical financial reporting and analysis, as it bypasses standard authentication and authorization mechanisms that are designed to protect sensitive corporate data from unauthorized access or manipulation.
From a technical perspective, the flaw enables an attacker with network access via HTTP to execute actions that result in full system takeover. This implies that the vulnerability likely involves improper validation of user inputs or session management tokens within the security layer, allowing malicious actors to bypass authentication checks or exploit logic errors to assume administrative privileges. The ease of exploitation suggests a lack of sufficient input sanitization or insufficient enforcement of access controls at the application level. By leveraging this weakness, an attacker can inject malicious commands, exfiltrate confidential financial records, alter transactional data integrity, or disrupt service availability by compromising underlying system processes associated with the Hyperion server infrastructure.
The operational impact of this vulnerability is substantial, as reflected in its CVSS 3.1 Base Score of 8.8, which indicates a High severity level. The vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) details that the attack requires no user interaction and has low complexity, while impacting confidentiality, integrity, and availability at a high degree. In practical terms, this means that any authenticated but unprivileged user on the network can potentially seize control of the application server. This could lead to significant financial fraud through data manipulation, regulatory non-compliance due to compromised audit trails, and operational downtime affecting business continuity. The ability to take over the system allows for persistent backdoors, lateral movement within the corporate network, and potential ransomware deployment targeting critical financial databases.
To mitigate this risk, immediate action is required to apply the latest security patches provided by Oracle for version 11.2.26.0.000 or upgrade to a supported, patched release where these specific security flaws have been addressed. Organizations should also implement network segmentation strategies to restrict HTTP access to Hyperion servers only from authorized management networks rather than exposing them broadly across the enterprise LAN. Additionally, enforcing strict role-based access control policies and ensuring that all users operate with the minimum necessary privileges can reduce the attack surface even if a vulnerability is present. Regular security audits and penetration testing focused on authentication bypasses and privilege escalation techniques are recommended to identify similar weaknesses in other components of the Hyperion suite or related financial systems.
This vulnerability aligns with common weakness enumerations such as CWE-269, which addresses Improper Privilege Management, and potentially CWE-79 if it involves cross-site scripting leading to session hijacking or command injection depending on the exact technical root cause. In terms of adversary tactics, this scenario maps closely to MITRE ATT&CK techniques related to Initial Access via valid accounts and Defense Evasion through privilege escalation. Understanding these mappings helps security teams prioritize remediation efforts based on established industry frameworks for threat modeling and vulnerability management. Continuous monitoring of Oracle Security Alerts is essential to stay informed about emerging patches and associated workarounds until the underlying code defects are fully resolved in future software updates.