CVE-2026-70873: Oracle Hyperion DRM Auth Bypass Vulnerability

CVE-2026-70873 Overview

CVE-2026-70873 is a critical vulnerability in the Oracle Hyperion Data Relationship Management product within the Oracle Hyperion suite. The flaw resides in the Access and security component of version 11.2.25.0.000. An unauthenticated attacker with network access via TCP can exploit this vulnerability with low complexity. Successful exploitation results in complete takeover of Oracle Hyperion Data Relationship Management, compromising confidentiality, integrity, and availability. The vulnerability was published in Oracle's Security Alert Advisory in August 2026.

Critical Impact
Unauthenticated remote attackers can fully compromise Oracle Hyperion Data Relationship Management deployments over the network without user interaction.

Affected Products

Oracle Hyperion Data Relationship Management version 11.2.25.0.000
Oracle Hyperion product family (Access and security component)
Deployments exposing Hyperion services over TCP networks

Discovery Timeline

2026-08-18 - CVE-2026-70873 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70873

Vulnerability Analysis

The vulnerability affects the Access and security component of Oracle Hyperion Data Relationship Management (DRM), the enterprise master data management platform used to govern financial and operational hierarchies. According to Oracle's advisory, the flaw permits unauthenticated network-based attackers to take over the DRM instance. Because DRM often holds authoritative reference data for financial consolidation and reporting, compromise cascades into downstream financial systems.

The attacker requires only network reachability to the DRM service over TCP. No credentials, privileges, or user interaction are needed. Successful exploitation yields full impact against confidentiality, integrity, and availability, consistent with a complete application takeover.

Root Cause

Oracle categorized the weakness under the Access and security component, indicating a flaw in authentication or authorization logic. Public technical details beyond the vendor advisory are not available. Refer to the Oracle Security Alert August 2026 for vendor-supplied details.

Attack Vector

Exploitation requires network access to the Oracle Hyperion DRM service over TCP. The attacker sends crafted requests that bypass the Access and security controls, gaining the ability to execute privileged operations against the application. The Exploit Prediction Scoring System (EPSS) rates the probability of exploitation at 0.486% as of August 2026, though this figure typically increases after weaponized proof-of-concept code becomes public.

No verified proof-of-concept code is publicly available at the time of writing. Defenders should treat the vulnerability as exploitable given the pre-authentication, network-accessible nature described in the advisory.

Detection Methods for CVE-2026-70873

Indicators of Compromise

Unexpected administrative or configuration changes within Oracle Hyperion DRM hierarchies, nodes, or property definitions
Authentication or session events originating from unfamiliar source IPs targeting DRM service ports over TCP
New or unexpected user accounts, role assignments, or privilege modifications in the DRM Access and security module
Anomalous outbound connections from Hyperion application servers following inbound TCP traffic bursts

Detection Strategies

Review Oracle Hyperion DRM application logs for unauthenticated requests reaching privileged endpoints
Correlate web server, application server, and database audit logs to identify request sequences bypassing normal authentication flows
Baseline normal API and administrative traffic to the DRM host and alert on deviations
Compare running DRM binaries and configuration files against known-good hashes from the vendor

Monitoring Recommendations

Enable verbose authentication logging on the DRM Access and security component and forward logs to a central SIEM
Monitor for privilege escalation and role modifications within Hyperion audit trails
Alert on any network traffic to Hyperion DRM ports from outside approved administrative subnets
Track process execution and file writes on Hyperion application servers for post-exploitation activity

How to Mitigate CVE-2026-70873

Immediate Actions Required

Apply the security patches referenced in the Oracle Security Alert August 2026 as soon as possible
Inventory all Oracle Hyperion DRM deployments and identify systems running version 11.2.25.0.000
Restrict network access to Hyperion DRM services so only authorized administrative hosts can reach TCP listener ports
Review DRM audit logs for indicators of prior exploitation before patching

Patch Information

Oracle published fixes as part of the August 2026 Security Alert cycle. Administrators must download and apply the patches listed for Oracle Hyperion Data Relationship Management version 11.2.25.0.000 from My Oracle Support. See the Oracle Security Alert August 2026 for patch identifiers and installation instructions.

Workarounds

Place Hyperion DRM behind a VPN or jump host so the service is not reachable from untrusted networks
Enforce network segmentation and firewall rules restricting TCP access to authorized management workstations
Disable or isolate the DRM service until patches are applied if network restrictions cannot be enforced
Rotate administrative credentials and service accounts associated with the DRM deployment after patching

bash

# Example firewall restriction limiting DRM access to an admin subnet
iptables -A INPUT -p tcp --dport <DRM_PORT> -s 10.0.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport <DRM_PORT> -j DROP