CVE-2026-87188 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 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 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/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 fundamentally undermines the integrity and confidentiality of financial data processing systems. This specific iteration of the software is susceptible to an attack vector that requires no authentication from the adversary, allowing any external actor with network connectivity via HTTP to interact directly with the vulnerable service endpoints. The absence of required credentials for exploitation significantly lowers the barrier to entry for malicious actors, transforming what might otherwise be a complex privilege escalation scenario into a straightforward remote code execution or system compromise event accessible over standard web protocols.
From a technical perspective, this flaw enables an unauthenticated attacker to achieve complete control over the Oracle Hyperion Financial Management application environment. The high severity of the issue is quantified by a CVSS 3.1 Base Score of 9.8 out of 10, indicating that the vulnerability has profound impacts across all three pillars of information security: confidentiality, integrity, and availability. An attacker leveraging this weakness can not only exfiltrate sensitive financial records but also alter critical data configurations or disrupt service operations entirely. The vector specification (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) confirms that the attack is network-based, requires low complexity, involves no user interaction, and results in high impact on all security metrics for an unchanged system scope.
The operational impact of this vulnerability extends beyond immediate technical compromise to severe business continuity risks. Oracle Hyperion Financial Management serves as a core platform for enterprise performance management, budgeting, forecasting, and financial reporting. A successful takeover allows adversaries to manipulate financial statements, inject fraudulent transactions, or destroy audit trails essential for regulatory compliance. In regulated industries such as finance and healthcare, where data integrity is paramount, the ability of an external actor to alter system state without detection poses a catastrophic risk to organizational reputation and legal standing. The lack of authentication requirements means that automated scanning tools can rapidly identify and exploit this weakness across large networks, potentially leading to widespread compromise if left unpatched.
This vulnerability aligns with several established industry standards for classification and mitigation tracking. It is closely associated with CWE-287, which describes Improper Authentication, as the system fails to verify the identity of users attempting to access protected resources. Furthermore, the exploitation method maps directly to MITRE ATT&CK technique T1059, Command and Scripting Interpreter, or potentially T1136, Internal Credential Access, depending on the specific mechanism used to gain initial foothold and maintain persistence within the application server environment. Understanding these mappings is crucial for security teams aiming to detect similar behaviors through endpoint detection and response systems or network intrusion prevention rules that monitor for anomalous HTTP requests targeting known vulnerable endpoints.
Mitigation strategies must prioritize immediate remediation due to the high exploitability and severity of this flaw. The primary defense involves applying the latest available patches from Oracle, which address the underlying code defects allowing unauthenticated access. Organizations should also implement strict network segmentation policies to ensure that Hyperion Financial Management instances are not directly exposed to public internet-facing networks without robust perimeter defenses such as Web Application Firewalls configured with specific rulesets to block malicious payloads targeting this component. Additionally, enforcing multi-factor authentication for all administrative interfaces and reviewing access control lists can provide layered security even if the primary vulnerability is temporarily unpatched. Regular vulnerability scanning focused on version-specific checks for Oracle Hyperion components will help maintain visibility into potential exposure windows before attackers can leverage these weaknesses in active campaigns.