CVE-2026-70893: Oracle Hyperion DRM Auth Bypass Vulnerability

CVE-2026-70893 Overview

CVE-2026-70893 is a high-severity vulnerability in the Oracle Hyperion Data Relationship Management product, part of the Oracle Hyperion suite. The flaw resides in the Access and security component and affects version 11.2.25.0.000. A low-privileged attacker with network access via SQL can exploit the weakness to compromise the application. Exploitation is difficult, but successful attacks produce a scope change and can significantly impact additional products. The issue maps to CWE-284: Improper Access Control and was published in Oracle's August 2026 Critical Patch Update advisory.

Critical Impact
Successful exploitation allows unauthorized creation, deletion, or modification of critical data and complete read access to all Oracle Hyperion Data Relationship Management accessible data, with scope extending beyond the vulnerable component.

Affected Products

Oracle Hyperion Data Relationship Management version 11.2.25.0.000
Oracle Hyperion product family (component: Access and security)
Downstream products reachable through the scope change

Discovery Timeline

2026-08-18 - CVE-2026-70893 published to the National Vulnerability Database
2026-08-22 - Last updated in NVD database

Technical Details for CVE-2026-70893

Vulnerability Analysis

The vulnerability sits in the Access and security component of Oracle Hyperion Data Relationship Management. An authenticated attacker holding low privileges can send crafted SQL over the network to bypass access enforcement. The condition results in confidentiality and integrity impact, but does not affect availability. Because the CVSS scope is changed, exploitation can affect resources managed outside the vulnerable component's security authority. This behavior is characteristic of improper access control weaknesses classified under CWE-284, where authorization checks fail to constrain a caller's actions on protected objects.

Root Cause

The root cause is improper access control within the Access and security component. Authorization logic does not correctly restrict SQL-driven operations issued by low-privileged principals. As a result, a caller can reach data and operations that should require elevated rights. Oracle's advisory identifies version 11.2.25.0.000 as the supported affected release.

Attack Vector

The attack vector is network-based and requires prior authentication with low privileges. The attacker interacts through SQL to trigger the access control flaw. High attack complexity indicates that specific conditions or timing are required for reliable exploitation. No user interaction is required. Refer to the Oracle Security Alert August 2026 for vendor-supplied technical context.

No verified proof-of-concept code is available. See the Oracle advisory for authoritative technical details.

Detection Methods for CVE-2026-70893

Indicators of Compromise

Unexpected SQL statements from low-privileged Hyperion Data Relationship Management accounts targeting security or metadata tables
Creation, modification, or deletion of dimension or hierarchy records outside normal change windows
Authenticated sessions performing operations inconsistent with the account's assigned role
Anomalous read access to sensitive master data managed by Data Relationship Management

Detection Strategies

Enable database-level auditing on Hyperion Data Relationship Management schemas and log all DDL and privileged DML activity
Baseline SQL query patterns for each application role and alert on deviations, especially privilege-sensitive statements
Correlate application authentication events with database session activity to identify privilege mismatches
Map suspicious activity to MITRE ATT&CK techniques T1078 (Valid Accounts) and T1190 (Exploit Public-Facing Application)

Monitoring Recommendations

Forward Hyperion application, web tier, and database audit logs to a centralized analytics platform for correlation
Monitor role and permission changes in the Access and security component in near real time
Alert on scope-crossing activity where Hyperion sessions touch integrated downstream systems unexpectedly

How to Mitigate CVE-2026-70893

Immediate Actions Required

Apply the fixes in the Oracle Security Alert August 2026 to all affected Hyperion Data Relationship Management deployments
Inventory installations of version 11.2.25.0.000 and prioritize internet-adjacent or shared-tenant instances
Review and reduce the number of low-privileged accounts with network access to the application
Rotate credentials for any accounts that may have been used to test or probe the flaw

Patch Information

Oracle addressed CVE-2026-70893 in the August 2026 Critical Patch Update. Administrators should download and apply the Hyperion Data Relationship Management patch documented in the Oracle Security Alert August 2026. Validate patch application in a non-production environment before promoting to production, and confirm post-patch role and permission behavior.

Workarounds

Restrict network access to Hyperion Data Relationship Management endpoints to trusted management networks only
Enforce least-privilege role assignments and remove unnecessary standing access to the Access and security component
Enable database-side query controls and row-level security where supported to limit blast radius
Increase logging verbosity on the Hyperion database until patches are applied and verified

bash

# Configuration example
# Restrict DRM service exposure at the network boundary and audit DB activity
iptables -A INPUT -p tcp --dport 5210 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 5210 -j DROP

# Oracle DB: enable unified auditing for the DRM schema
sqlplus / as sysdba <<EOF
AUDIT POLICY ORA_LOGON_FAILURES;
CREATE AUDIT POLICY drm_access_policy ACTIONS ALL ON DRM_ADMIN.SECURITY_ROLES;
AUDIT POLICY drm_access_policy;
EOF