CVE-2026-70677 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 require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Hyperion Calculation Manager accessible data as well as unauthorized update, insert or delete access to some of Oracle Hyperion Calculation Manager accessible data. CVSS 3.1 Base Score 5.9 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/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 significant security deficiency because it allows an unauthenticated attacker to compromise the system over a network via HTTP without requiring prior authentication credentials. The nature of this vulnerability is characterized by its difficulty to exploit, which serves as a partial mitigating factor against automated mass exploitation attempts but does not eliminate the risk posed by targeted attacks or those leveraging social engineering tactics.
The operational impact of this vulnerability is substantial due to the high privilege level granted upon successful exploitation. An attacker who successfully exploits this flaw gains unauthorized access to critical data within the Oracle Hyperion Calculation Manager environment. This includes the ability to read, update, insert, and delete accessible data, effectively compromising both the confidentiality and integrity of the system's information assets. While availability is not directly impacted according to the provided metrics, the loss of trust in data accuracy due to unauthorized modifications can have severe downstream effects on financial reporting and business intelligence processes that rely on this platform for accurate calculations and planning.
A critical aspect of this vulnerability is the requirement for human interaction from a person other than the attacker. This characteristic aligns with common attack vectors such as phishing or malicious link delivery, where an end-user must perform an action like clicking a crafted URL or opening a manipulated file to trigger the exploit condition. Consequently, while the technical flaw allows remote code execution or data manipulation at a low privilege level initially, the social engineering component raises the barrier for casual attackers but remains highly effective against organizations with insufficient security awareness training. This dynamic places the vulnerability in a category where user behavior is as significant a risk factor as the software defect itself.
From a classification perspective, this issue maps to CWE-79: Improper Neutralization of Input During Web Page Generation, commonly known as Cross-Site Scripting (XSS), or potentially CWE-284: Improper Access Control if it involves bypassing authentication mechanisms through crafted requests. The requirement for user interaction strongly correlates with the ATT&CK technique T1566.001: Phishing: Spearphishing Link, where attackers deliver malicious content via email to induce a victim to interact with a compromised resource. Additionally, the unauthorized access and data modification aspects relate to MITRE ATT&CK tactic TA0003: Persistence or TA0007: Discovery depending on how the attacker utilizes the gained access post-exploitation.
Mitigation strategies should prioritize immediate patching of Oracle Hyperion Calculation Manager to the latest available version that addresses this security flaw, as vendor-provided patches are typically designed to resolve specific logic errors in authentication and input validation routines. In environments where patching is not immediately feasible, network-level controls such as Web Application Firewalls can be configured to detect and block anomalous HTTP requests associated with exploitation attempts. Furthermore, implementing strict content security policies and enforcing multi-factor authentication for all administrative interfaces can reduce the attack surface. Security awareness training focused on identifying phishing attempts is also essential given the human interaction requirement of this vulnerability. Regular audits of access logs should be conducted to identify any signs of unauthorized data modification or unusual login patterns that might indicate a successful exploitation event.