CVE-2026-87218 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 unauthorized creation, deletion or modification access to critical data or all Oracle Hyperion Financial Management accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Hyperion Financial Management. CVSS 3.1 Base Score 8.1 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/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, specifically affecting version 11.2.26.0.000 and potentially other supported releases in that lineage. This flaw represents a critical security deficiency that undermines the integrity and availability of financial data processing systems. The core technical issue stems from insufficient access controls or authentication mechanisms within the application's communication handling logic, which permits unauthenticated actors to interact with sensitive system functions when they are positioned on the same physical network segment as the target hardware. This architectural weakness effectively bypasses standard perimeter defenses that rely solely on logical separation rather than strict host-based security policies, allowing an attacker who has gained local network access to execute malicious operations without providing valid credentials.
From a technical perspective, this vulnerability aligns with CWE-287, which describes Improper Authentication, and potentially CWE-306, Missing Authentication for Critical Function, depending on the specific implementation details of how the unauthenticated requests are processed. The attack vector is classified as Adjacent Network (AV:A) in CVSS terminology, indicating that while remote exploitation over the public internet is not possible due to network segmentation or firewall rules, an attacker with physical access to the local area network can exploit this flaw. This scenario often arises in enterprise environments where internal networks are trusted implicitly and lack micro-segmentation strategies. The low complexity (AC:L) of the attack suggests that no specialized conditions or user interaction are required beyond having a functional connection to the target segment, making it highly feasible for any insider threat actor or an attacker who has breached the physical security perimeter of the organization's data center or office network.
The operational impact of this vulnerability is severe, characterized by high impacts on both integrity and availability as reflected in its CVSS 3.1 base score of 8.1. An successful exploitation allows for unauthorized creation, deletion, or modification of critical financial data stored within Oracle Hyperion Financial Management. In the context of enterprise resource planning and financial reporting systems, such tampering can lead to significant regulatory non-compliance, inaccurate financial statements, and substantial monetary losses. Furthermore, the vulnerability enables an attacker to cause a hang or frequently repeatable crash of the application service, resulting in a complete denial of service (DOS). This availability impact disrupts business continuity, preventing authorized users from accessing essential financial tools during critical reporting periods such as month-end close or quarterly earnings preparation.
In terms of threat modeling and adversary behavior, this vulnerability maps to ATT&CK technique T1078, Valid Accounts, although in this specific case it involves unauthenticated access which may also relate to T1546, Event Triggered Execution, if the exploit triggers background processes that persist or escalate privileges. It is crucial for security teams to recognize that network-level isolation is no longer sufficient protection against insider threats or compromised endpoints on the same subnet. The ability to crash the service repeatedly indicates a potential vector for resource exhaustion attacks, which can be used as a distraction technique while other malicious activities are conducted elsewhere in the infrastructure.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. Oracle should apply the latest security patches or updates that address this specific flaw in the Security component of Hyperion Financial Management version 11.2.26.0.000. In addition to patching, organizations should implement strict network segmentation using VLANs and firewalls to isolate financial management servers from general user workstations and other non-essential services. This ensures that even if an attacker gains access to the physical segment of a compromised workstation, they cannot reach the Hyperion server directly. Furthermore, deploying intrusion detection systems (IDS) or web application firewalls (WAF) can help monitor for anomalous traffic patterns indicative of unauthenticated exploitation attempts. Regular audits of network access controls and enforcement of zero-trust principles will significantly reduce the attack surface associated with adjacent network vulnerabilities in critical financial infrastructure.