CVE-2026-70894: Oracle Hyperion DRM Auth Bypass Flaw

CVE-2026-70894 Overview

CVE-2026-70894 is an access control vulnerability in the Oracle Hyperion Data Relationship Management product, within the Access and security component. The affected version is 11.2.25.0.000. An unauthenticated attacker with logon access to the infrastructure where Oracle Hyperion Data Relationship Management executes can compromise the application. Successful exploitation leads to unauthorized read, creation, deletion, or modification of all data accessible to Oracle Hyperion Data Relationship Management. The weakness is classified under CWE-284: Improper Access Control.

Critical Impact
Attackers with local infrastructure logon can read and modify all data accessible to Oracle Hyperion Data Relationship Management, breaking confidentiality and integrity of enterprise master data.

Affected Products

Oracle Hyperion Data Relationship Management 11.2.25.0.000
Oracle Hyperion product family (Access and security component)
Deployments running the affected supported version on shared enterprise infrastructure

Discovery Timeline

2026-08-18 - CVE-2026-70894 published to the National Vulnerability Database (NVD)
2026-08-18 - Oracle Security Alert August 2026 released addressing the issue
2026-08-22 - Last updated in the NVD database

Technical Details for CVE-2026-70894

Vulnerability Analysis

The flaw resides in the Access and security component of Oracle Hyperion Data Relationship Management. The component fails to enforce proper access control checks on operations that touch application-managed data. An attacker who can authenticate to the host operating system where the product runs can invoke functionality that should require application-level authorization. The result is full read and write access to master data governed by the platform, including hierarchies, properties, and relationships used across downstream financial and reporting systems.

Root Cause

The root cause is improper access control [CWE-284]. Authorization decisions rely on assumptions about the calling context of the local infrastructure rather than on authenticated application identity. This design gap allows a local attacker to bypass the access boundary between infrastructure-level logon and application-level privilege.

Attack Vector

Exploitation requires local access to the infrastructure hosting Oracle Hyperion Data Relationship Management. No prior application credentials and no user interaction are needed. The attacker leverages their infrastructure logon to interact with product interfaces or resources that skip access enforcement. Because attack complexity is low, any user with a local session on the host, including low-privilege operators or lateral-movement footholds, can trigger the vulnerable code path. Availability is not affected, but confidentiality and integrity of all Data Relationship Management data are fully at risk.

No public proof-of-concept code has been published for CVE-2026-70894. Refer to the Oracle Security Alert August 2026 for vendor-provided technical details.

Detection Methods for CVE-2026-70894

Indicators of Compromise

Unexpected local logons to servers hosting Oracle Hyperion Data Relationship Management, especially from accounts that do not routinely operate the platform.
Unauthorized creation, modification, or deletion of hierarchies, nodes, or properties within Data Relationship Management audit logs.
Access to Data Relationship Management data or configuration files by OS accounts that are not associated with any application session.

Detection Strategies

Correlate operating system authentication events on Hyperion hosts with application-level user activity to surface actions that lack a corresponding application login.
Monitor Data Relationship Management audit tables for high-volume export, bulk change, or metadata alteration events outside change-management windows.
Baseline expected process and file access patterns on Hyperion servers and alert on deviations, particularly access to configuration and data stores by unexpected users.

Monitoring Recommendations

Forward Windows Security, Data Relationship Management application logs, and database audit logs to a centralized analytics platform for cross-source correlation.
Enable file integrity monitoring on Data Relationship Management binaries, configuration files, and data directories.
Review privileged access to Hyperion infrastructure hosts weekly and alert on any new local or interactive logon rights.

How to Mitigate CVE-2026-70894

Immediate Actions Required

Apply the fixes referenced in the Oracle Security Alert August 2026 to all Oracle Hyperion Data Relationship Management 11.2.25.0.000 deployments.
Restrict interactive and remote logon rights on Hyperion infrastructure hosts to a minimal set of administrators.
Rotate any credentials that were stored on or used from the affected hosts if unauthorized local access is suspected.

Patch Information

Oracle addressed CVE-2026-70894 in the August 2026 Critical Patch Update out-of-cycle security alert cycle. Administrators should review the Oracle Security Alert August 2026 advisory for the exact patch bundle, prerequisites, and installation guidance for Oracle Hyperion Data Relationship Management 11.2.25.0.000. Apply the patch in a validated non-production environment before rolling out to production.

Workarounds

Enforce least privilege on the Hyperion host so only vetted administrators can obtain a local logon.
Segment Hyperion infrastructure onto a dedicated management network and require jump-host access with multi-factor authentication.
Increase audit logging verbosity on the application and host, and review logs daily until patching is complete.

bash

# Example: restrict interactive logon on a Windows Hyperion host to a dedicated group
# Run in an elevated PowerShell session and validate group membership before applying
secedit /export /cfg C:\secpol.cfg
# Edit SeInteractiveLogonRight in secpol.cfg to include only DRM_Admins
secedit /configure /db C:\Windows\security\local.sdb /cfg C:\secpol.cfg /areas USER_RIGHTS