CVE-2026-70679 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. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hyperion Calculation Manager. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle Hyperion Calculation Manager accessible data. CVSS 3.1 Base Score 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).
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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, specifically affecting version 11.2.25.0.000 and potentially other supported releases in that lineage. This flaw represents a critical weakness in the application's access control mechanisms, allowing for unauthorized manipulation of data stored within the system. The nature of this vulnerability is characterized by its ease of exploitation, as it does not require any form of authentication or user interaction to be triggered. An attacker can initiate an exploit simply by having network connectivity to the target service via HTTP, leveraging a low complexity attack vector that requires no special conditions beyond basic network reachability.
From a technical perspective, this issue aligns with CWE-269, which describes Improper Privilege Management, and more specifically points toward CWE-862, Missing Authorization. The core flaw lies in the failure of the server to properly verify whether an incoming request originates from an authorized user before processing actions that modify data states. Because the vulnerability is accessible over HTTP without authentication requirements, it effectively bypasses standard security boundaries designed to restrict access to sensitive administrative functions or data repositories within the Hyperion environment. The absence of proper authorization checks allows any remote actor with network access to interact directly with internal APIs or endpoints responsible for data persistence operations.
The operational impact of this vulnerability is significant due to its direct effect on data integrity, as reflected in a CVSS 3.1 Base Score of 5.3. While the attack does not currently result in unauthorized disclosure of confidential information or denial of service affecting availability, it permits an unauthenticated attacker to perform unauthorized updates, inserts, and deletes against accessible data within Oracle Hyperion Calculation Manager. This capability undermines the trustworthiness of financial calculations, reports, and configurations managed by the platform. In a business context where calculation managers are used for critical financial planning and analysis, such integrity violations can lead to corrupted datasets, inaccurate reporting, and potential regulatory non-compliance depending on the sensitivity of the data involved.
In terms of threat modeling, this vulnerability maps directly to MITRE ATT&CK technique T1078, Valid Accounts, although in this specific case it exploits a lack of account requirements entirely, effectively allowing anonymous access that mimics valid user privileges. It also relates to T1136, Create Account, if the attacker uses the write capabilities to establish persistent backdoors or modify existing accounts for future unauthorized access. The attack vector is classified as Network (AV:N) with Low Complexity (AC:L), indicating it can be automated and executed by attackers with minimal skill levels using common network tools.
Mitigation strategies must prioritize immediate remediation through vendor-provided patches if available, ensuring that the system is updated to a version where this authorization flaw has been resolved. In environments where patching cannot occur immediately due to operational constraints, compensating controls should be implemented at the network perimeter level. This includes configuring firewalls or web application firewalls to restrict access to the Hyperion Calculation Manager interfaces exclusively from trusted IP addresses and internal networks. Additionally, enforcing HTTPS instead of HTTP can help mitigate certain types of interception attacks, although it does not resolve the underlying authorization flaw. Regular security audits and penetration testing focused on authentication bypasses are recommended to detect similar weaknesses in other components of the Oracle Hyperion suite before they can be exploited by malicious actors seeking to compromise data integrity.