CVE-2026-70676 in Hyperion Calculation Manager
Summary
by MITRE • 08/19/2026
Vulnerability in the Oracle Hyperion Calculation Manager product of Oracle Hyperion (component: Security). The supported version that is affected is 11.2.25.0.000. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hyperion Calculation Manager. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Hyperion Calculation Manager accessible data as well as unauthorized read access to a subset of Oracle Hyperion Calculation Manager accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Hyperion Calculation Manager. CVSS 3.1 Base Score 7.0 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L).
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Analysis
by VulDB Data Team • 08/19/2026
The identified vulnerability resides within the Security component of Oracle Hyperion Calculation Manager version 11.2.25.0.000, representing a critical security flaw that allows for unauthorized access and manipulation of system resources. This specific weakness is characterized by its difficulty to exploit, which implies that while an attacker requires specialized knowledge or conditions to successfully leverage the issue, it does not require user interaction or complex social engineering tactics beyond standard network connectivity. The attack vector is strictly remote via HTTP, meaning any unauthenticated actor with network access to the affected service can attempt to compromise the integrity and availability of the application environment. This classification highlights a significant risk for organizations relying on Oracle Hyperion for financial planning and analysis, as the security boundary fails to properly authenticate requests before processing sensitive operations.
From a technical perspective, this vulnerability aligns closely with CWE-287, which describes Improper Authentication, where an attacker is able to bypass authentication mechanisms due to flawed logic or configuration errors within the application layer. The ability of an unauthenticated user to perform actions indicates that the security controls governing access to critical data are insufficiently enforced at the point of entry via HTTP requests. This lack of proper identity verification allows malicious actors to interact with internal APIs or endpoints that should be restricted to authorized personnel only, effectively bypassing the intended security perimeter without providing valid credentials.
The operational impact of this vulnerability is severe, encompassing breaches in confidentiality, integrity, and availability as reflected by a CVSS 3.1 Base Score of 7.0. The high impact on Integrity stems from the attacker's ability to create, delete, or modify critical data within Oracle Hyperion Calculation Manager. This capability poses a direct threat to financial reporting accuracy and business continuity, as malicious actors could alter calculation rules, overwrite essential datasets, or remove vital configuration settings. Such modifications can lead to significant financial discrepancies, regulatory non-compliance, and operational disruption that may be difficult to detect immediately if logging mechanisms are not robustly configured.
Furthermore, the vulnerability impacts Confidentiality by allowing unauthorized read access to a subset of accessible data. While this is rated as low impact in terms of volume compared to full system compromise, it still represents a significant breach of privacy and proprietary information protection standards. Sensitive financial models, forecasts, or strategic plans stored within the calculation manager could be exfiltrated, leading to competitive disadvantage or insider threat scenarios if combined with other vulnerabilities. The partial denial of service capability adds another layer of risk, as attackers can disrupt normal operations by consuming resources or causing errors that render specific functions unavailable to legitimate users, thereby affecting business productivity and user trust in the system's reliability.
In terms of attack classification under the MITRE ATT&CK framework, this vulnerability facilitates techniques associated with Initial Access and Privilege Escalation through exploitation of application logic flaws rather than traditional credential theft or injection attacks. The unauthenticated nature of the access means it falls under categories where attackers exploit misconfigurations or design weaknesses to gain a foothold within the network environment. This type of flaw is particularly dangerous in enterprise environments because it can be automated and scaled across multiple instances if patching is delayed, allowing for widespread compromise without detection by standard intrusion prevention systems that focus on known signature-based attacks rather than logic flaws.
To mitigate this risk, immediate action must be taken to apply the latest security patches provided by Oracle for version 11.2.25.0.000 and subsequent updates. Organizations should verify their deployment configurations to ensure that no instances of the vulnerable component are exposed directly to untrusted networks without additional protective layers such as Web Application Firewalls configured with rules specifically targeting this vulnerability's request patterns. Implementing strict network segmentation is also recommended, ensuring that Oracle Hyperion Calculation Manager services reside in isolated zones accessible only from authorized internal subnets or through secure virtual private networks rather than open HTTP interfaces on public-facing servers. Regular security audits and penetration testing focused on authentication bypasses will help identify similar weaknesses before they can be exploited by malicious actors seeking to compromise financial data integrity.