CVE-2026-70916: Oracle Hyperion Financial Management Flaw

CVE-2026-70916 Overview

CVE-2026-70916 is an information disclosure vulnerability in the Security component of Oracle Hyperion Financial Management. The flaw affects supported version 11.2.25.0.000. An unauthenticated attacker with local logon access to the infrastructure where Oracle Hyperion Financial Management executes can exploit this weakness. Successful exploitation grants unauthorized read access to a subset of Oracle Hyperion Financial Management data. The issue is tracked under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor. Oracle addressed the vulnerability in the August 2026 Critical Patch Update.

Critical Impact
Local unauthenticated access enables read exposure of a subset of Oracle Hyperion Financial Management data, potentially including financial records processed by the platform.

Affected Products

Oracle Hyperion Financial Management 11.2.25.0.000
Oracle Hyperion product family (Security component)
Deployments running the affected supported version on-premises

Discovery Timeline

2026-08-18 - CVE-2026-70916 published to NVD
2026-08-22 - Last updated in NVD database

Technical Details for CVE-2026-70916

Vulnerability Analysis

CVE-2026-70916 resides in the Security component of Oracle Hyperion Financial Management. The vulnerability enables an attacker with local logon access to the host infrastructure to read a subset of application data without authenticating to the Hyperion Financial Management application itself. The confidentiality impact is limited to a subset of data. Integrity and availability are not affected. The weakness maps to CWE-200, covering exposure of sensitive information to an unauthorized actor.

Root Cause

The underlying defect stems from improper access control within the Security component. The component fails to correctly restrict read access to a subset of data managed by Hyperion Financial Management. Oracle has not published the exact code-level detail. See the Oracle Security Alert for vendor-supplied technical context.

Attack Vector

The attack vector is local. The attacker must possess logon access to the infrastructure hosting Oracle Hyperion Financial Management. No prior authentication to the Hyperion application is required, and no user interaction is needed. The attack complexity is low, making exploitation straightforward once local access exists. Environments that share the Hyperion host with less-trusted users, jump boxes, or service accounts face the greatest risk.

No public proof-of-concept or exploit code is currently available. Refer to the Oracle Security Alert for August 2026 for further vendor guidance.

Detection Methods for CVE-2026-70916

Indicators of Compromise

Unexpected local logons to servers hosting Oracle Hyperion Financial Management, particularly from accounts that do not routinely access the host.
Anomalous file or object access patterns against Hyperion Financial Management data stores, configuration files, and Security component artifacts.
Enumeration of Hyperion service accounts, processes, or memory by non-administrative local users.

Detection Strategies

Audit local interactive and non-interactive logons on Hyperion Financial Management hosts and correlate with authorized change windows.
Monitor process execution and file access by non-Hyperion service accounts against directories owned by the Security component.
Baseline normal Hyperion administrative activity and alert on deviations such as new local tools, scripts, or credential enumeration.

Monitoring Recommendations

Forward Windows Security event logs, Hyperion application logs, and host process telemetry to a centralized SIEM for correlation.
Track privileged and service account usage on Hyperion hosts, including logon type, source, and duration.
Alert on read access to Hyperion configuration, metadata, and data files by accounts outside the approved application administrator group.

How to Mitigate CVE-2026-70916

Immediate Actions Required

Apply the fixes released in the Oracle Critical Security Alert for August 2026 to all Hyperion Financial Management deployments running 11.2.25.0.000.
Inventory Hyperion Financial Management hosts and confirm the installed patch level after remediation.
Restrict local logon rights on Hyperion hosts to a minimal set of administrative accounts.

Patch Information

Oracle addressed CVE-2026-70916 in the August 2026 Critical Patch Update. Administrators should follow the guidance in the Oracle Security Alert and validate the patch on non-production systems before rolling out to production Hyperion environments.

Workarounds

Remove interactive logon rights and RDP access from non-administrative users on Hyperion Financial Management servers.
Enforce least privilege on file system permissions for Hyperion data, configuration, and Security component directories.
Segment Hyperion hosts on isolated management networks to reduce the population of users able to obtain local logon access.

bash

# Example: restrict interactive logon to a dedicated Hyperion admin group (Windows)
# Run in an elevated PowerShell session on the Hyperion host
secedit /export /cfg C:\secpol.cfg
# Edit SeInteractiveLogonRight to include only HyperionAdmins and Administrators
secedit /configure /db C:\Windows\security\local.sdb /cfg C:\secpol.cfg /areas USER_RIGHTS