CVE-2026-87210 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 as well as unauthorized access to critical data or complete access to all Oracle Hyperion Financial Management accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Hyperion Financial Management. CVSS 3.1 Base Score 8.3 (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:L).
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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 weakness in the application's authentication and access control mechanisms. This flaw is characterized by its susceptibility to exploitation by an unauthenticated attacker who possesses physical or logical access to the communication segment connected to the hardware hosting the Oracle Hyperion Financial Management instance. The nature of this vulnerability indicates that the system fails to properly enforce security boundaries at the network layer, allowing malicious actors on the same local area network or broadcast domain to interact with the application without providing valid credentials. This lack of proper isolation and authentication enforcement creates a significant entry point for adversaries who are already within the internal network perimeter, bypassing traditional external firewalls that typically protect against remote attacks from untrusted networks.
From a technical perspective, this vulnerability aligns closely with CWE-287, which describes Improper Authentication, as well as CWE-306, Missing Authentication for Critical Function. The attacker leverages the low complexity of exploitation and the absence of required privileges to gain unauthorized access. By exploiting this flaw, an adversary can manipulate the security context of the application, effectively impersonating legitimate users or system processes. This capability allows the execution of administrative functions that should be restricted to authorized personnel only. The vulnerability's severity is underscored by its CVSS 3.1 base score of 8.3, classified as High Severity. The vector string AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L indicates that while the attack requires adjacent network access, it demands little to no skill and involves no user interaction, resulting in high impacts on confidentiality and integrity alongside a low impact on availability.
The operational impact of this vulnerability is severe due to the comprehensive nature of the potential compromise. Successful exploitation enables an attacker to perform unauthorized creation, deletion, or modification of critical data within the Oracle Hyperion Financial Management database. This directly threatens the integrity of financial records, budgets, and forecasts managed by the system. Furthermore, it grants complete access to all accessible data, leading to a total breach of confidentiality for sensitive corporate financial information. Beyond data theft and manipulation, the vulnerability also permits actions that can cause a partial denial of service against the Oracle Hyperion Financial Management application. This means attackers could disrupt business operations by rendering critical financial planning tools unavailable or unstable, impacting organizational productivity and decision-making processes during active fiscal periods.
In terms of threat modeling, this scenario maps to MITRE ATT&CK techniques such as T1078 Valid Accounts if the attacker escalates privileges after initial access, but more critically it represents an initial vector for lateral movement within a trusted network segment. The ability to modify data and cause denial of service places this vulnerability in the realm of high-risk insider threats or compromised internal workstations being used by external actors who have gained adjacent network access through other means like phishing or physical intrusion. Organizations must recognize that perimeter defenses are insufficient when such vulnerabilities exist on critical infrastructure components accessible from within the local network segment.
To mitigate this risk, immediate remediation is required as Oracle typically addresses these issues through security patches and updates in subsequent releases of Hyperion Financial Management. Administrators should apply the latest available patch set for version 11.2.x to close the authentication bypass flaw. In addition to software updates, defensive network architecture strategies must be implemented. This includes segmenting critical financial servers into isolated VLANs with strict access control lists that restrict communication only from authorized application clients and management stations. Implementing mutual TLS or other strong encryption protocols for internal communications can also help ensure that even if an attacker is on the same physical segment, they cannot easily intercept or manipulate unencrypted traffic to exploit this vulnerability. Regular auditing of network segmentation policies and continuous monitoring for anomalous authentication attempts are essential steps in maintaining a robust security posture against such adjacent-network threats.