CVE-2026-87189 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 high privileged attacker with network access via Oracle Net to compromise Oracle Hyperion Financial Management. While the vulnerability is in Oracle Hyperion Financial Management, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in takeover of Oracle Hyperion Financial Management. CVSS 3.1 Base Score 9.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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 flaw in the application's authentication and authorization mechanisms. This security defect allows for an easily exploitable attack vector that requires high-privileged access but can be leveraged by an attacker with network connectivity via Oracle Net protocols. The nature of this vulnerability suggests a failure in proper input validation or session management within the web services interface, which is consistent with common patterns found in enterprise financial software where complex authentication flows may contain logic errors that bypass intended security controls.
From a technical perspective, the flaw enables an attacker to compromise the integrity and confidentiality of the system by gaining unauthorized administrative control over Oracle Hyperion Financial Management. The requirement for high-privileged access indicates that while the initial entry point might be accessible through standard network services, the exploitation likely involves leveraging existing elevated credentials or manipulating session tokens associated with privileged accounts. This aligns with CWE-287 Improper Authentication and CWE-269 Improvement of Privileges, as the attacker transitions from a state of having high-level access to achieving full system takeover. The ease of exploitation further underscores the severity, suggesting that automated tools could potentially be used to exploit this flaw without significant manual intervention once initial network access is established.
The operational impact of this vulnerability is severe due to its potential for scope change, meaning attacks on Oracle Hyperion Financial Management can significantly affect additional products within the broader Oracle ecosystem. This lateral movement capability implies that the compromised system may serve as a pivot point for attacking other interconnected services or databases. The CVSS 3.1 base score of 9.1 reflects high impacts across confidentiality, integrity, and availability. An attacker achieving full takeover could exfiltrate sensitive financial data, alter critical accounting records to facilitate fraud, or disrupt business operations by rendering the system unavailable. This aligns with ATT&CK techniques such as T1078 Valid Accounts for initial access leveraging existing privileges and T1069 Permission Groups Discovery if the attacker seeks to expand their reach within the network environment following the initial compromise.
Mitigation strategies must prioritize immediate patching of Oracle Hyperion Financial Management to version 11.2.26.0.001 or later, where this security flaw has been addressed by Oracle. In environments where patching is not immediately feasible, organizations should implement strict network segmentation to limit access to the affected component via Oracle Net protocols. Additionally, enforcing multi-factor authentication for all high-privileged accounts and monitoring for anomalous login patterns can help detect exploitation attempts. Security teams should also review audit logs for signs of unauthorized administrative actions or unusual data access patterns that may indicate a successful compromise has already occurred. Regular vulnerability assessments focusing on web application security and privilege escalation vectors are essential to maintaining the integrity of financial management systems against such high-severity threats.