CVE-2026-87190 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. Difficult to exploit 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 7.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/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 risk to organizations relying on this enterprise performance management platform for financial reporting and analysis. This flaw is characterized by its difficulty in exploitation, which necessitates a high level of skill or specific conditions from the attacker, yet it carries severe consequences due to the potential for complete system compromise. The vulnerability allows an attacker with low privileges who has network access via HTTP to exploit the security mechanisms governing user authentication and authorization processes within the application.
From a technical perspective, this issue aligns with CWE-287, which describes Improper Authentication, or potentially CWE-269 if it involves Privilege Escalation following initial unauthorized access. The core flaw likely stems from insufficient validation of credentials or session tokens when processed through the HTTP interface, allowing an authenticated but low-level user to bypass intended security controls. This could involve manipulating request parameters, exploiting logic errors in role-based access control checks, or leveraging insecure direct object references that were not properly sanitized before processing by the backend services responsible for enforcing security policies.
The operational impact of a successful exploit is severe, as indicated by the CVSS 3.1 Base Score of 7.5 and its vector components indicating high impacts on Confidentiality, Integrity, and Availability with no user interaction required once network access is established. An attacker who successfully exploits this vulnerability can achieve full takeover of the Oracle Hyperion Financial Management instance. This means they could modify financial data integrity, exfiltrate sensitive confidential information such as payroll details or strategic forecasts, and disrupt availability by crashing services or locking out legitimate administrators. In a corporate environment, such compromise undermines trust in financial reporting and may lead to significant regulatory penalties under standards like SOX if the integrity of reported figures is compromised.
In terms of threat modeling, this vulnerability maps to ATT&CK techniques related to Initial Access via valid accounts (T1078) and potentially Lateral Movement or Defense Evasion depending on how the takeover is executed post-exploitation. The network-based nature over HTTP suggests that while encryption might mitigate some interception risks if HTTPS were properly configured elsewhere, the application layer logic remains vulnerable to targeted attacks from any host with connectivity to the service port.
Mitigation strategies should prioritize immediate patching by Oracle for version 11.2.26.0.000 or upgrading to a supported release where this security flaw has been addressed. In environments where patching is not immediately feasible, network segmentation should be enforced to restrict HTTP access to the Hyperion application only from trusted management networks rather than exposing it broadly across corporate LANs. Additionally, implementing strict input validation and enforcing multi-factor authentication for all administrative accounts can reduce the attack surface. Security teams should also monitor logs for anomalous login patterns or unusual data modification activities that might indicate an ongoing exploitation attempt against this specific component.