CVE-2026-70877: Oracle Hyperion DRM Privilege Escalation

CVE-2026-70877 Overview

CVE-2026-70877 is a high-severity vulnerability in the Oracle Hyperion Data Relationship Management product, within the Access and security component. The affected supported version is 11.2.25.0.000. A low-privileged attacker with network access over HTTP can exploit this flaw to fully compromise Oracle Hyperion Data Relationship Management. Successful exploitation results in complete takeover of the affected instance, impacting confidentiality, integrity, and availability. Oracle addressed the issue in the Oracle Security Alert August 2026.

Critical Impact
Authenticated attackers with low privileges can take over Oracle Hyperion Data Relationship Management instances over the network via HTTP.

Affected Products

Oracle Hyperion Data Relationship Management 11.2.25.0.000
Oracle Hyperion product family (Access and security component)
Deployments exposed to network-reachable HTTP endpoints

Discovery Timeline

2026-08-18 - CVE-2026-70877 published to NVD
2026-08-18 - Oracle publishes Security Alert Advisory for August 2026
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70877

Vulnerability Analysis

CVE-2026-70877 affects the Access and security component of Oracle Hyperion Data Relationship Management (DRM). DRM is an enterprise master data management application used to model hierarchies, dimensions, and reference data across financial and operational systems. A flaw in access enforcement enables a low-privileged authenticated user to escalate control over the application.

Oracle characterizes the vulnerability as easily exploitable and network-reachable via HTTP. Successful exploitation yields full compromise of the DRM instance, exposing sensitive master data, allowing modification of business hierarchies, and enabling disruption of downstream financial systems that consume DRM data.

Because Hyperion DRM often integrates with Oracle Hyperion Financial Management, EPM, and downstream ERP systems, a compromise can cascade into broader financial data integrity risks.

Root Cause

Oracle has not published the specific weakness class in public advisory content. The vulnerability resides in the Access and security component, indicating a defect in authentication, authorization, or session handling logic that allows an authenticated low-privileged user to perform actions beyond their permitted scope. No CWE identifier has been assigned in the NVD record.

Attack Vector

The attack requires network access over HTTP and valid low-privileged credentials. No user interaction is required, and the attacker does not need to pivot from a trusted zone. An attacker with any authenticated foothold on the DRM web tier can send crafted HTTP requests to the vulnerable component and gain full application control. See the Oracle Security Alert August 2026 for vendor detail.

No public proof-of-concept exploit or exploitation-in-the-wild reports are available at time of publication.

Detection Methods for CVE-2026-70877

Indicators of Compromise

Unexpected privilege changes, role assignments, or administrative actions performed by non-administrative DRM accounts.
Anomalous HTTP requests to Hyperion DRM Access and security endpoints originating from low-privileged user sessions.
Unexplained modifications to hierarchies, versions, or property definitions in DRM audit logs.
New or modified integration jobs and export profiles created outside change windows.

Detection Strategies

Baseline normal user activity in DRM and alert on deviations, such as low-privileged accounts issuing administrative API calls.
Correlate DRM application logs with web server access logs to identify HTTP requests that trigger privilege changes.
Monitor authentication events for unusual session reuse, concurrent logins, or geographic anomalies against DRM.

Monitoring Recommendations

Forward DRM application, audit, and web server logs to a centralized SIEM for retention and correlation.
Enable verbose logging on the Access and security component and track failed authorization checks.
Alert on any change to DRM system roles, node access groups, or property category permissions.

How to Mitigate CVE-2026-70877

Immediate Actions Required

Apply the fixes from the Oracle Security Alert August 2026 to all Hyperion DRM 11.2.25.0.000 deployments.
Inventory all Hyperion DRM instances, including test and non-production environments, and confirm patch status.
Rotate credentials for all DRM users and service accounts after patching.
Restrict network access to DRM web interfaces to trusted management networks and VPN users only.

Patch Information

Oracle addressed CVE-2026-70877 in the August 2026 Security Alert. Administrators should review the Oracle Security Alert August 2026 advisory, download the relevant patch for Hyperion DRM, and apply it following Oracle's documented patch procedure. Test the patch in a staging environment before production rollout to validate integrations with downstream EPM and ERP systems.

Workarounds

Enforce least-privilege on all DRM user accounts and remove unused low-privileged accounts to reduce the attackable population.
Place DRM behind a web application firewall or reverse proxy that restricts access by source IP and enforces strong authentication.
Require multi-factor authentication at the network edge for any user reaching the DRM web tier.
Increase audit log review frequency until patching is complete.

bash

# Example: restrict DRM HTTP access to a trusted management subnet using iptables
iptables -A INPUT -p tcp --dport 443 -s 10.10.50.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP