CVE-2026-87241 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. CVSS 3.1 Base Score 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/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 that lineage. This flaw represents a critical security deficiency where the application fails to adequately enforce authentication or access control mechanisms for certain operations when accessed via specific communication channels. The core technical issue involves an improper restriction of functionality, allowing unauthenticated actors who have established physical connectivity to the network segment hosting the Oracle Hyperion Financial Management server to interact with sensitive system functions without providing valid credentials. This type of flaw is commonly categorized under CWE-287, which describes Improper Authentication, and often overlaps with CWE-306 regarding Missing Authentication for Critical Function. The vulnerability exploits a gap in the perimeter defense strategy where physical or local network access bypasses logical security controls that are typically enforced over remote connections.
The operational impact of this vulnerability is severe due to its high exploitability and broad scope of compromise. An attacker with access to the physical communication segment, such as a wired Ethernet port on the same LAN switch or VLAN as the server, can execute attacks without needing prior authentication credentials. This capability allows for unauthorized creation, deletion, or modification of critical data stored within the financial management system. Furthermore, it grants the ability to read sensitive financial records and operational metrics that are normally protected by role-based access controls. The consequences extend beyond simple data theft; an attacker could alter financial reports, manipulate transactional data, or delete essential configuration files, thereby compromising the integrity and availability of the organization's financial infrastructure. This aligns with ATT&CK technique T1078, Valid Accounts, although in this case, it is exploited by unauthenticated users leveraging network-level access rather than stolen credentials, highlighting a failure in defense-in-depth strategies that assume physical or local network boundaries provide sufficient security isolation.
The severity of this issue is quantified by a CVSS 3.1 Base Score of 8.1, classified as High Severity. The vector string (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N) indicates that the Attack Vector is Adjacent Network, meaning the attacker must be on the same local network segment but does not need to interact with a user interface or require complex conditions. The low Attack Complexity and absence of required privileges make this vulnerability highly attractive for malicious actors who have gained any level of physical proximity to the corporate infrastructure. The impacts are heavily weighted towards Confidentiality and Integrity, as indicated by the High ratings in those categories, while Availability remains unaffected according to the base score description provided. This suggests that while data can be stolen or altered, the system itself may remain operational, potentially allowing for stealthy long-term compromise of financial records without immediate detection through service outages.
Mitigation strategies must focus on both technical controls and physical security protocols. Since the vulnerability is exploitable via adjacent network access, relying solely on application-level authentication is insufficient if the underlying transport layer does not enforce encryption or mutual authentication. Organizations should implement strict network segmentation to isolate Oracle Hyperion Financial Management servers into dedicated VLANs with restricted access lists that only permit connections from authorized management stations and client IP ranges. Additionally, enabling HTTPS for all administrative interfaces ensures that traffic is encrypted and can be monitored by intrusion detection systems. Physical security measures are equally critical; access to server rooms and network closets must be tightly controlled to prevent unauthorized individuals from plugging devices into available ports. Regular vulnerability scanning and patching of the Oracle Hyperion Financial Management software should also be prioritized, as Oracle may release updates that address this specific authentication bypass in future maintenance releases.