CVE-2026-87228 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 unauthorized access to critical data or complete access to all Oracle Hyperion Financial Management accessible data as well as unauthorized update, insert or delete access to some of Oracle Hyperion Financial Management accessible data. CVSS 3.1 Base Score 8.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/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 that lineage. This flaw represents a critical security deficiency that permits unauthenticated attackers to compromise the integrity and confidentiality of the application environment. The attack vector is network-based via HTTP, meaning no physical access or prior authentication credentials are required for exploitation. An attacker with local area network (LAN) or wide area network (WAN) connectivity can initiate an exploit against this service without user interaction or complex preconditions. This characteristic significantly lowers the barrier to entry for malicious actors, allowing them to target the system remotely and efficiently.
From a technical perspective, the vulnerability likely stems from insufficient input validation or improper access control mechanisms within the HTTP handling routines of the Hyperion Financial Management application server. Such flaws often manifest as broken authentication logic where session tokens are not properly validated, or as insecure direct object references that allow traversal into restricted data structures. The absence of mandatory authentication checks for specific administrative endpoints or API calls enables an external entity to bypass security controls entirely. This aligns with common vulnerability classifications such as CWE-287 Improper Authentication and CWE-862 Missing Authorization, which describe scenarios where access control mechanisms fail to enforce intended restrictions on authenticated or unauthenticated users.
The operational impact of this vulnerability is severe due to the high privilege level typically associated with financial management systems. Successful exploitation grants the attacker unauthorized access to critical business data, including sensitive financial records, budgets, and forecasting models. The CVSS 3.1 base score of 8.2 reflects a High severity rating driven primarily by Confidentiality and Integrity impacts. Specifically, the vector indicates high confidentiality impact (C:H) allowing complete access to all accessible data, while also permitting low integrity impact (I:L), which includes unauthorized updates, inserts, or deletes to some data sets. This combination means an attacker can not only exfiltrate sensitive financial information but also alter transactional records, potentially leading to significant financial fraud, regulatory non-compliance, and reputational damage for the organization hosting the system.
In terms of threat modeling, this vulnerability maps directly to MITRE ATT&CK techniques related to Initial Access and Credential Access. Specifically, it aligns with T1078 Valid Accounts if the attacker leverages default or weak credentials obtained through other means, but more critically, it fits T1190 Exploit Public-Facing Application where an unauthenticated user exploits a flaw in internet-facing software. The ability to modify data also touches upon T1489 Service Stop or T1565 Data Manipulation depending on the specific outcome of the exploit. Organizations must recognize that financial systems are high-value targets for state-sponsored actors and criminal syndicates seeking both intellectual property theft and direct monetary gain through ledger manipulation.
Mitigation strategies should focus immediately on network segmentation and access control hardening. Since the vulnerability is exploitable via HTTP, it is imperative to ensure that Oracle Hyperion Financial Management instances are not directly exposed to untrusted networks such as the public internet. Deploying a Web Application Firewall (WAF) with rulesets tuned for common web application attacks can provide an additional layer of defense by filtering malicious payloads before they reach the application server. Furthermore, implementing strict firewall policies to restrict inbound HTTP traffic only from authorized management stations or specific IP ranges is essential. If remote access is required, it should be routed through a secure virtual private network (VPN) with multi-factor authentication enabled at the gateway level rather than relying solely on the application's internal security controls.
Oracle has likely released patches addressing this specific flaw in subsequent updates to version 11.2.26.x or later minor releases. System administrators must prioritize applying these vendor-provided security patches as soon as they are available and verified for compatibility with existing integrations. In addition to patching, a thorough review of user accounts is recommended to disable any unused default accounts that may have been exploited in conjunction with this vulnerability. Regular vulnerability scanning using authenticated scanners can help identify similar misconfigurations across the estate before they are actively exploited by adversaries. Continuous monitoring of application logs for anomalous HTTP requests and unauthorized data modifications will aid in early detection of exploitation attempts, allowing security teams to respond rapidly to potential breaches.