CVE-2026-87203 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 classified as an authentication bypass or privilege escalation issue that allows low-privileged attackers with network access via HTTP to compromise the application's security controls. The difficulty of exploitation suggests that while the vulnerability requires specific conditions or precise timing, it does not demand complex manual interaction from the attacker, making it a viable target for automated scanning tools and targeted attacks against exposed web services.
From a technical perspective, this flaw likely involves improper validation of user credentials or session tokens within the HTTP request handling mechanisms of the Hyperion Financial Management server. By exploiting this weakness, an adversary can bypass standard authentication checks to gain unauthorized access to administrative functions or sensitive financial data. The ability for low-privileged users to escalate their privileges effectively neutralizes the principle of least privilege, a cornerstone of secure system design. This type of vulnerability is commonly associated with CWE-287 Improper Authentication and CWE-269 Improper Privilege Management in the Common Weakness Enumeration database.
The operational impact of this vulnerability is severe, as indicated by its CVSS 3.1 Base Score of 7.5 which denotes a High severity rating. The vector string (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H) reveals that the attack can be conducted remotely over a network, requires high complexity to execute successfully, and demands only low privileges for the initial attacker position. Crucially, there is no user interface interaction required, meaning victims are not tricked into clicking malicious links or opening files. The scope remains unchanged, but the impacts on confidentiality, integrity, and availability are all rated as High. This means a successful exploit can lead to the complete takeover of Oracle Hyperion Financial Management, allowing attackers to read confidential financial records, alter critical data such as budgets and forecasts, or disrupt service availability by crashing the application services.
In terms of threat modeling, this vulnerability aligns with MITRE ATT&CK techniques related to Initial Access via Valid Accounts (T1078) if the attacker uses stolen low-level credentials, followed by Privilege Escalation (T1068). The lack of user interaction and remote network accessibility places it firmly within the context of web application attacks often seen in frameworks like OWASP Top 10, particularly those involving broken access control. Attackers could leverage this flaw to establish a persistent foothold within the corporate network, using Hyperion as a pivot point for further lateral movement toward more sensitive financial databases or ERP systems connected to it.
Mitigation strategies must focus on immediate remediation and enhanced security controls. The primary recommendation is to apply the latest security patches provided by Oracle for version 11.2.26.0.000, which address the underlying code flaws in the security component. Organizations should also ensure that Hyperion Financial Management instances are not directly exposed to untrusted networks via HTTP; instead, they must be placed behind a reverse proxy or web application firewall that enforces HTTPS and performs rigorous input validation. Implementing multi-factor authentication for all administrative accounts adds an additional layer of defense against credential-based attacks. Furthermore, network segmentation should be reviewed to ensure that the Hyperion servers reside in isolated zones with strict access control lists limiting connectivity only to authorized client applications and management interfaces. Regular vulnerability assessments and penetration testing are essential to identify similar weaknesses before they can be exploited by malicious actors seeking financial data theft or system disruption.