CVE-2026-70936: Oracle Hyperion Financial Management Auth Bypass

CVE-2026-70936 Overview

CVE-2026-70936 is an improper access control vulnerability [CWE-284] in the Security component of Oracle Hyperion Financial Management. The affected version is 11.2.25.0.000. A low-privileged attacker with local logon access to the infrastructure where Oracle Hyperion Financial Management executes can compromise the application. Successful exploitation results in unauthorized creation, deletion, or modification of critical data, along with unauthorized read access to all Oracle Hyperion Financial Management accessible data.

Critical Impact
Local attackers with low privileges can gain unauthorized read and write access to all data managed by Oracle Hyperion Financial Management, compromising confidentiality and integrity of financial reporting information.

Affected Products

Oracle Hyperion Financial Management 11.2.25.0.000
Oracle Hyperion product family (Security component)
Deployments running the affected Hyperion Financial Management release

Discovery Timeline

2026-08-18 - CVE-2026-70936 published to NVD
2026-08-22 - Last updated in NVD database
Referenced in the Oracle Security Alert: CSPU Aug 2026

Technical Details for CVE-2026-70936

Vulnerability Analysis

The vulnerability resides in the Security component of Oracle Hyperion Financial Management. Oracle categorizes it as easily exploitable by a low-privileged attacker with local logon access to the host running the application. Exploitation affects both confidentiality and integrity, but not availability.

Oracle Hyperion Financial Management handles consolidation, reporting, and analysis of financial data. Improper access control [CWE-284] in this context allows an authenticated user to reach data or operations that should be restricted by role. Attackers can read, create, modify, or delete records that fall outside their assigned entitlements.

Because the flaw impacts the Security component itself, exploitation may undermine the authorization decisions that other Hyperion modules rely on. This creates downstream exposure across financial data stores accessible to the application.

Root Cause

The root cause is improper access control [CWE-284] within the Security component of Oracle Hyperion Financial Management. Authorization checks do not fully constrain what a low-privileged, authenticated user can perform on protected data and operations.

Attack Vector

Exploitation requires local access with valid low-privileged credentials. The attacker must be able to log on to the infrastructure where Oracle Hyperion Financial Management runs. No user interaction is required, and the scope is unchanged. Remote, unauthenticated exploitation is not indicated.

No public proof-of-concept, exploit code, or in-the-wild exploitation has been documented for this CVE at the time of publication. See the Oracle Security Alert: CSPU Aug 2026 for authoritative technical details.

Detection Methods for CVE-2026-70936

Indicators of Compromise

Unexpected read, create, update, or delete operations on Hyperion Financial Management data performed by low-privileged accounts.
Access to consolidation records, journals, or metadata by users outside their assigned entity or scenario scope.
Anomalous logon activity on servers hosting Oracle Hyperion Financial Management, especially from service or shared accounts.

Detection Strategies

Audit Hyperion Financial Management application logs for authorization events that succeed against objects users should not access.
Correlate Windows or host authentication logs with Hyperion session activity to identify local logons that precede sensitive data operations.
Baseline normal user behavior per role and alert on deviations such as bulk exports or mass metadata changes.

Monitoring Recommendations

Forward Hyperion Financial Management application, IIS, and Windows Security logs to a centralized SIEM for correlation and retention.
Monitor privileged group membership and role assignments within Hyperion Shared Services for unauthorized changes.
Alert on off-hours administrative activity and on any modifications to security classes, entity lists, or user provisioning.

How to Mitigate CVE-2026-70936

Immediate Actions Required

Apply the fixes documented in the Oracle Security Alert: CSPU Aug 2026 to affected Hyperion Financial Management deployments.
Inventory all Oracle Hyperion Financial Management installations and confirm whether version 11.2.25.0.000 is present.
Review user provisioning in Hyperion Shared Services and remove unused or excessive local accounts on Hyperion hosts.

Patch Information

Oracle addressed this vulnerability in the August 2026 Critical Security Patch Update. Administrators should follow the vendor guidance in the Oracle Security Alert: CSPU Aug 2026 and apply the referenced patches to Oracle Hyperion Financial Management 11.2.25.0.000. Validate the patch in a non-production environment before broad deployment.

Workarounds

Restrict interactive and remote logon rights on Hyperion Financial Management servers to a minimal set of administrators.
Enforce least privilege in Hyperion Shared Services security classes and remove standing access that is not required for daily operations.
Segment Hyperion infrastructure from general user networks and require jump-host access with multi-factor authentication.
Increase auditing on Hyperion data operations until patching is complete to shorten detection time for misuse.

bash

# Configuration example
# Review local logon rights on Hyperion Financial Management hosts (Windows)
# Export current user rights assignments for audit
secedit /export /cfg C:\Temp\hfm_rights.inf /areas USER_RIGHTS

# Enumerate members of local Administrators and Hyperion service groups
net localgroup Administrators
net localgroup HFM_Admins

# Review Hyperion Shared Services provisioning via EPM System tooling
# (run from the EPM instance directory)
epmsys_registry.bat view SHARED_SERVICES_PRODUCT/@components