CVE-2026-87140: Oracle Hyperion DRM Privilege Escalation

CVE-2026-87140 Overview

CVE-2026-87140 is a privilege escalation vulnerability in Oracle Hyperion Data Relationship Management (DRM), specifically within the Access and security component. The affected version is 11.2.26.0.000. An authenticated attacker with low privileges and network access over HTTP can compromise the application. Successful exploitation results in full takeover of the DRM instance, affecting confidentiality, integrity, and availability. The weakness is categorized under CWE-269: Improper Privilege Management. Oracle addressed the issue in a security alert published in September 2026.

Critical Impact
Successful exploitation results in complete takeover of Oracle Hyperion Data Relationship Management, exposing sensitive master data and financial hierarchies to unauthorized modification.

Affected Products

Oracle Hyperion Data Relationship Management 11.2.26.0.000
Oracle Hyperion product family (Access and security component)
Deployments exposing the DRM HTTP interface to authenticated users

Discovery Timeline

2026-09-15 - CVE-2026-87140 published to NVD
2026-09-17 - Last updated in NVD database

Technical Details for CVE-2026-87140

Vulnerability Analysis

The vulnerability resides in the Access and security component of Oracle Hyperion Data Relationship Management. This component governs how DRM enforces role assignments, permissions, and privilege boundaries between authenticated users. An attacker who already holds a low-privilege DRM account can leverage the flaw to escalate to administrative control of the application.

Exploitation requires network access to the DRM HTTP interface and valid credentials. Attack complexity is high, meaning the attacker must satisfy specific preconditions or timing requirements outside their direct control. When those conditions are met, the impact is complete takeover of the DRM environment.

Because DRM manages enterprise master data hierarchies for finance, HR, and reporting systems, takeover of the application places downstream analytical and consolidation workloads at risk. See the Oracle Security Alert CSPUSEP2026 for authoritative advisory content.

Root Cause

The root cause is improper privilege management within the DRM access enforcement logic ([CWE-269]). The application does not adequately restrict privilege transitions or authorization checks for low-privileged principals, allowing them to acquire capabilities intended only for administrators. Oracle has not published deeper technical detail beyond the advisory summary.

Attack Vector

The attack vector is network-based over HTTP. An attacker authenticates to DRM with any valid low-privileged account, then issues crafted requests to the vulnerable Access and security functionality. No user interaction is required. Because scope is unchanged, the attacker gains elevated rights within the DRM security context itself, which is sufficient to compromise the entire application and its managed data.

No public proof-of-concept exploit is available at the time of publication, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.

Detection Methods for CVE-2026-87140

Indicators of Compromise

Unexpected role or permission changes recorded in DRM audit logs for low-privileged accounts
HTTP requests to DRM administrative endpoints originating from non-administrator sessions
Creation of new application users, node access groups, or hierarchies outside change-management windows
Sudden spikes in export or metadata query volume from a single authenticated session

Detection Strategies

Enable and centrally forward DRM application and web server logs to a SIEM for correlation across sessions
Alert on privilege modifications where the actor is not a member of an approved administrator role
Baseline normal API call patterns per user role and flag deviations that touch security configuration endpoints
Correlate authentication events with subsequent administrative actions to identify sessions that gain rights mid-flow

Monitoring Recommendations

Continuously monitor Access and security configuration changes and require dual approval for role edits
Track outbound network flows from DRM servers for signs of data exfiltration following suspicious activity
Review scheduled DRM jobs and batch client activity for unauthorized additions
Verify integrity of hierarchy exports against known-good snapshots on a regular cadence

How to Mitigate CVE-2026-87140

Immediate Actions Required

Apply the patch referenced in the Oracle Security Alert CSPUSEP2026 to all DRM 11.2.26.0.000 deployments
Inventory every Hyperion DRM instance and confirm version alignment before validating remediation
Audit all DRM user accounts and disable any that are unused, shared, or lack a documented owner
Restrict network reachability of the DRM HTTP interface to trusted management segments

Patch Information

Oracle published the fix as part of Security Alert CSPUSEP2026. Administrators should download the applicable DRM patch from My Oracle Support and follow Oracle's documented upgrade procedure. Validate the deployment in a test environment before rolling to production, and re-run access reviews after patching to confirm no residual elevated accounts remain.

Workarounds

Enforce least-privilege role assignments and remove standing administrative rights where possible
Require multi-factor authentication on all identity providers fronting Hyperion DRM
Place the DRM web tier behind a reverse proxy or WAF that restricts access to authenticated corporate users
Increase audit logging verbosity for the Access and security component until the patch is applied

bash

# Configuration example: restrict DRM HTTP access at the network edge
# Replace with your environment's admin CIDR ranges
iptables -A INPUT -p tcp --dport 443 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP