CVE-2026-70929: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-70929 Overview

CVE-2026-70929 is an access control vulnerability [CWE-284] in the Security component of Oracle Hyperion Financial Management. The flaw affects supported version 11.2.25.0.000 and allows a low-privileged attacker with network access via HTTP to compromise the application. Successful exploitation grants unauthorized read, create, delete, and modify access to all data accessible through Oracle Hyperion Financial Management. The vulnerability is classified as easily exploitable and does not require user interaction.

Critical Impact
An authenticated attacker with low privileges can read, modify, or delete all data accessible through Oracle Hyperion Financial Management over the network.

Affected Products

Oracle Hyperion Financial Management version 11.2.25.0.000
Oracle Hyperion product family (Security component)

Discovery Timeline

2026-08-18 - CVE-2026-70929 published to the National Vulnerability Database
2026-08-22 - Last updated in the NVD database

Technical Details for CVE-2026-70929

Vulnerability Analysis

The vulnerability resides in the Security component of Oracle Hyperion Financial Management. It is categorized under [CWE-284: Improper Access Control], indicating that the application fails to correctly restrict access to functionality or data based on the authenticated user's privileges. An attacker with any valid low-privilege account can leverage this weakness to reach resources reserved for higher-privileged roles.

The exposure affects both confidentiality and integrity of Hyperion Financial Management data. Because Hyperion Financial Management typically stores consolidated financial reporting data, unauthorized read or write access can undermine the accuracy of financial disclosures and regulatory reporting.

Root Cause

The root cause is improper enforcement of authorization checks within the Security component. The application appears to authenticate the caller but does not fully validate that the caller is authorized for the requested operation or data scope. This class of flaw is common in enterprise applications where security decisions occur at the presentation layer instead of the data-access layer.

Attack Vector

Exploitation occurs over the network using HTTP. The attacker must hold a valid, low-privileged account on the target Hyperion Financial Management instance. No user interaction is required, attack complexity is low, and the impact remains within a single security scope. Availability is not affected, but attackers can exfiltrate or tamper with any data reachable by the compromised application context.

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. Refer to the Oracle Security Alert for vendor-supplied technical detail.

Detection Methods for CVE-2026-70929

Indicators of Compromise

Unexpected HTTP requests from low-privileged Hyperion accounts targeting administrative or cross-entity endpoints.
Access to Hyperion Financial Management data sets or entities outside the user's assigned security class.
Bulk read, create, or delete operations against financial data originating from non-administrative sessions.

Detection Strategies

Audit Hyperion Financial Management application logs for authorization anomalies, particularly requests where the responding resource does not match the caller's role.
Correlate web server access logs with Hyperion role assignments to identify privilege boundary violations.
Baseline normal API and page access patterns per user role and alert on deviations.

Monitoring Recommendations

Forward Hyperion Financial Management, IIS, and WebLogic logs to a centralized analytics platform for continuous review.
Monitor for spikes in data export, journal posting, or metadata modification actions by non-administrative users.
Track authentication events for low-privileged accounts that suddenly access sensitive entities or applications.

How to Mitigate CVE-2026-70929

Immediate Actions Required

Apply the Oracle Critical Patch Update referenced in the Oracle Security Alert to all affected Hyperion Financial Management deployments.
Inventory Hyperion Financial Management instances running version 11.2.25.0.000 and prioritize internet-exposed or business-critical systems.
Review and reduce the number of low-privileged accounts that can reach the Hyperion web tier.

Patch Information

Oracle addresses this vulnerability in the August 2026 Critical Patch Update. Administrators should download and apply the corresponding patch bundle for Oracle Hyperion Financial Management from My Oracle Support. Confirm the patched version by validating build metadata after installation and running Oracle's post-patch verification steps.

Workarounds

Restrict network access to Hyperion Financial Management endpoints to trusted internal segments and VPN users only.
Enforce strict role and security class assignments; remove standing access from accounts that do not require it.
Require multi-factor authentication for all Hyperion Financial Management users to raise the cost of low-privilege account abuse.
Enable and retain detailed audit logging on the application and web tiers until patches are applied.

bash

# Example: restrict Hyperion Financial Management web tier to trusted subnets (Linux iptables)
iptables -A INPUT -p tcp --dport 443 -s 10.0.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP