CVE-2026-70902: Oracle Hyperion DRM Auth Bypass Vulnerability

CVE-2026-70902 Overview

CVE-2026-70902 is a high-severity access control vulnerability in Oracle Hyperion Data Relationship Management, part of the Oracle Hyperion product family. The flaw resides in the Access and security component and affects version 11.2.25.0.000. A low-privileged attacker with logon access to the infrastructure where Oracle Hyperion Data Relationship Management runs can exploit this weakness to compromise confidentiality and integrity of managed data. Oracle disclosed the issue in the August 2026 Critical Patch Update Advisory. The vulnerability is classified under CWE-284: Improper Access Control.

Critical Impact
Successful exploitation permits unauthorized creation, deletion, or modification of all Oracle Hyperion Data Relationship Management data, along with unauthorized read access to critical information.

Affected Products

Oracle Hyperion Data Relationship Management version 11.2.25.0.000
Oracle Hyperion product family (Access and security component)
Deployments exposing local logon access to non-administrative users

Discovery Timeline

2026-08-18 - CVE-2026-70902 published to NVD
2026-08-22 - Last updated in NVD database

Technical Details for CVE-2026-70902

Vulnerability Analysis

The vulnerability affects the Access and security component of Oracle Hyperion Data Relationship Management. Improper access control [CWE-284] permits authenticated users with limited privileges to perform actions that should be restricted to higher-privileged roles. An attacker who already possesses valid low-privilege credentials on the host infrastructure can leverage the flaw to read, create, delete, or modify data managed by the application. The confidentiality and integrity impacts are rated High, while availability is not affected.

Root Cause

The root cause is improper enforcement of access control checks within the Access and security component. Authorization boundaries between privilege tiers are not fully validated before sensitive data operations execute. This class of weakness typically results from missing or inconsistent server-side permission verification when the application evaluates a user's ability to access or mutate master data records.

Attack Vector

Exploitation requires local logon access to the infrastructure where the affected product runs. The attack complexity is low and no user interaction is required. An authenticated, low-privileged actor interacts with the application through its normal interfaces and issues requests that bypass intended role restrictions. Because the scope is unchanged, the compromise remains within the vulnerable application, but that scope still covers all data accessible to Oracle Hyperion Data Relationship Management.

No public proof-of-concept exploit is currently known. Oracle has not disclosed additional exploitation specifics beyond the advisory. Refer to the Oracle Security Alert for August 2026 for authoritative details.

Detection Methods for CVE-2026-70902

Indicators of Compromise

Unexpected creation, modification, or deletion of master data records by low-privileged Hyperion accounts
Application audit log entries showing privileged actions performed under standard user contexts
Anomalous logon sessions to the Hyperion host from users who do not typically administer master data

Detection Strategies

Review Oracle Hyperion Data Relationship Management audit trails for role-privilege mismatches between user identity and executed operations
Correlate host-level authentication events with application-level data changes to surface actions performed by unexpected identities
Baseline routine data governance activity and alert on statistical deviations in create, update, and delete volume per user

Monitoring Recommendations

Forward Oracle Hyperion application and OS audit logs to a centralized analytics platform for retention and correlation
Monitor local interactive and remote logon events on hosts running Hyperion Data Relationship Management
Track changes to security roles, group memberships, and permission mappings within the Access and security component

How to Mitigate CVE-2026-70902

Immediate Actions Required

Apply the fixes published in the Oracle Critical Patch Update Advisory - August 2026 as soon as change windows permit
Inventory Oracle Hyperion Data Relationship Management deployments and confirm which instances run version 11.2.25.0.000
Restrict interactive and network logon rights on Hyperion hosts to a minimal, audited set of administrators

Patch Information

Oracle addressed CVE-2026-70902 in the August 2026 Critical Patch Update. Administrators should download and apply the patch corresponding to Oracle Hyperion Data Relationship Management 11.2.25.0.000 from My Oracle Support. Consult the Oracle Security Alert for the complete patch matrix and any prerequisite updates.

Workarounds

Remove logon rights on the Hyperion infrastructure from users who do not require direct host access until the patch is deployed
Enforce least-privilege role assignments within the Access and security component and remove unused or over-permissioned accounts
Enable and actively review application audit logging so unauthorized data operations are detected quickly

bash

# Configuration example: restrict interactive logon on the Hyperion host (Windows)
# Add only the required administrators to the local security policy
secedit /export /cfg current.inf
# Edit SeInteractiveLogonRight to include only approved accounts, then apply:
secedit /configure /db secedit.sdb /cfg hardened.inf /overwrite