CVE-2026-87243 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 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. 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 unauthorized creation, deletion or modification access to critical data or all Oracle Hyperion Financial Management accessible data as well as unauthorized access to critical data or complete access to all Oracle Hyperion Financial Management accessible data. CVSS 3.1 Base Score 8.0 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N).
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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, specifically affecting version 11.2.26.0.000 and potentially other supported releases in the suite. This flaw is characterized by a difficult-to-exploit nature that nonetheless permits an unauthenticated attacker to compromise the integrity and confidentiality of the application environment. The attack vector requires physical access to the communication segment attached to the hardware where Oracle Hyperion Financial Management executes, indicating that this is not a remote network-based vulnerability but rather one tied to local or direct physical connectivity. This classification aligns with CWE-269, which addresses Improper Handling of Authorization Claims in Contexts Requiring Physical Access, as well as CWE-345 regarding Insufficient Verification of Data Authenticity if the protocol relies on trust without cryptographic binding. The requirement for physical proximity to the network segment suggests that attackers must have legitimate or illicit access to the local area network infrastructure where the server resides, such as through a compromised switch port, direct cable insertion, or insider threat scenarios involving physical entry into data centers or secure office areas.
The operational impact of this vulnerability is severe due to its potential for scope change and high-impact outcomes on both confidentiality and integrity. Although the primary target is Oracle Hyperion Financial Management, successful exploitation can significantly impact additional products within the broader enterprise ecosystem that rely on shared infrastructure or integrated services. This lateral movement capability underscores the risk associated with flat network architectures where critical financial systems are not sufficiently segmented from other corporate resources. The CVSS 3.1 base score of 8.0 reflects high impacts on confidentiality and integrity, while availability remains unaffected in this specific vector description. An attacker who successfully exploits this flaw can achieve unauthorized creation, deletion, or modification of access controls to critical data. This means the attacker could alter role-based access control lists, potentially granting themselves elevated privileges or removing security restrictions for other users. Furthermore, the vulnerability allows for complete access to all Oracle Hyperion Financial Management accessible data, leading to a total breach of sensitive financial records, audit trails, and proprietary business intelligence stored within the system.
From an offensive security perspective, this vulnerability maps closely to MITRE ATT&CK techniques involving initial access via physical interaction or local privilege escalation through network protocol manipulation if applicable. Specifically, it relates to T1078 Valid Accounts if the attacker leverages stolen credentials obtained from the compromised segment, or potentially T1539 Steal Web Session Cookie if session tokens are transmitted without sufficient protection on that specific communication channel. The difficulty of exploitation serves as a partial mitigating factor but does not eliminate the risk for targeted attacks by well-resourced adversaries who can afford to invest time in crafting precise exploits against this physical attack surface. Organizations must recognize that even difficult-to-exploit vulnerabilities become critical when combined with high-impact consequences and broad scope changes across integrated product suites.
Mitigation strategies should focus on strict network segmentation and zero-trust architecture principles to limit the blast radius of any single compromise. Physical security controls are paramount; access to server rooms, switch racks, and network distribution frames must be tightly controlled using biometric authentication, mantraps, and continuous video surveillance to prevent unauthorized physical connection attempts. Additionally, implementing port security features on switches, such as 802.1X authentication or MAC address filtering, can restrict which devices are allowed to communicate on the segment hosting Oracle Hyperion Financial Management. Enabling encryption for all data in transit using TLS with strong cipher suites ensures that even if an attacker captures packets from the physical segment, they cannot easily decipher sensitive financial data or manipulate session tokens without breaking cryptographic protections. Regular auditing of network access logs and intrusion detection systems configured to monitor for anomalous traffic patterns on critical server segments can also help detect attempted exploitation activities early. Finally, ensuring that Oracle Hyperion Financial Management is updated to the latest patch level provided by Oracle may address underlying protocol weaknesses if a vendor-supplied fix exists, although physical isolation remains the most effective defense against this specific attack vector.