CVE-2026-87187 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 unauthenticated attacker with access to the physical communication segment attached to the hardware where the Oracle Hyperion Financial Management executes 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:A/AC:L/PR:N/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 weakness is characterized by its susceptibility to exploitation by an unauthenticated attacker who has gained physical access to the network segment or communication bus attached to the hardware hosting the application. The nature of this vulnerability suggests a failure in proper authentication mechanisms, session management protocols, or input validation processes that are exposed when the system interacts with adjacent devices on the local area network. Such flaws often stem from legacy security architectures that assume trust within internal networks, failing to enforce strict zero-trust principles even for locally connected entities. The presence of this vulnerability indicates a significant gap in defense-in-depth strategies, where physical proximity translates directly into digital compromise capabilities due to insufficient isolation or secure communication channel enforcement between the client and server components.
From an operational perspective, the impact of successfully exploiting this flaw is severe, resulting in a complete takeover of the Oracle Hyperion Financial Management environment. This level of compromise allows attackers to execute arbitrary code with the privileges of the application service account, which typically possesses extensive permissions over financial databases, reporting engines, and configuration settings. The consequences extend beyond mere data theft; they encompass the ability to alter critical financial records, manipulate audit trails, disrupt availability through denial-of-service conditions, or install persistent backdoors for future access. Given that Oracle Hyperion is often used by enterprises for mission-critical financial planning, analysis, and reporting, such a breach can lead to substantial regulatory non-compliance, reputational damage, and direct financial loss. The high severity rating reflects the ease of exploitation combined with the broad impact on confidentiality, integrity, and availability, making it a prime target for threat actors seeking initial access points within corporate networks where physical security controls may be less rigorous than logical ones.
In terms of industry standard classifications, this vulnerability aligns closely with CWE-287 Improper Authentication, as it allows unauthenticated users to gain control over the system. It also relates to CWE-918 Server-Side Request Forgery if the attack vector involves manipulating internal requests, or potentially CWE-352 Cross-Site Request Forgery depending on the specific implementation details of the web interface components involved in the authentication bypass. From a tactical standpoint within the MITRE ATT&CK framework, this vulnerability facilitates Initial Access and Privilege Escalation techniques. Attackers leveraging physical network access can exploit weak segmentation policies to pivot from their local position into the trusted zone where the financial application resides. This scenario highlights the risks associated with flat networks or insufficient micro-segmentation in enterprise environments, where lateral movement is trivialized by the lack of mutual authentication between services and endpoints on the same broadcast domain.
Mitigation strategies must address both immediate technical controls and long-term architectural improvements. Immediate remediation involves applying the latest security patches provided by Oracle for version 11.2.26.0.000, which likely contain fixes for the underlying code flaws enabling this unauthorized access. Administrators should also enforce strict network segmentation policies to isolate financial management servers from general user workstations and untrusted zones using firewalls or VLANs with explicit deny-all rules unless specific ports are required. Implementing mutual TLS authentication between clients and the Hyperion server can prevent man-in-the-middle attacks and ensure that only authorized, authenticated devices can establish connections. Additionally, enabling comprehensive logging and monitoring for anomalous login attempts or unusual API calls from local network segments will aid in early detection of exploitation attempts. Long-term solutions should include adopting a zero-trust architecture where every request is verified regardless of its origin within the corporate perimeter, thereby neutralizing the advantage gained by attackers with physical access to internal network infrastructure.