CVE-2026-70935: Oracle Hyperion Financial Management Bypass

CVE-2026-70935 Overview

CVE-2026-70935 affects the Security component of Oracle Hyperion Financial Management version 11.2.25.0.000. The flaw allows a low-privileged attacker with network access via HTTP to compromise the application. Successful exploitation grants unauthorized access to critical data or complete access to all Oracle Hyperion Financial Management accessible data. Attackers can also cause a partial denial of service against the affected instance. Oracle classifies this as an improper access control weakness [CWE-284].

Critical Impact
A low-privileged remote attacker can read all data managed by Oracle Hyperion Financial Management and cause partial service disruption over the network.

Affected Products

Oracle Hyperion Financial Management, version 11.2.25.0.000
Oracle Hyperion product family (Security component)
Enterprise Performance Management (EPM) deployments running the affected release

Discovery Timeline

2026-08-18 - CVE-2026-70935 published to the National Vulnerability Database
August 2026 - Oracle publishes the Oracle Security Alert August 2026 advisory
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70935

Vulnerability Analysis

The vulnerability resides in the Security component of Oracle Hyperion Financial Management. Improper access control [CWE-284] permits authenticated users with limited privileges to reach functionality or data they should not access. Oracle's advisory indicates the flaw is easily exploitable over the network using standard HTTP requests. The confidentiality impact is high because a successful attack exposes all data accessible to the application. Integrity is not affected, but attackers can trigger partial denial of service conditions against the service.

Root Cause

The root cause is missing or insufficient authorization enforcement inside the Security component. Access decisions do not adequately validate whether the calling user should reach the requested resource or operation. Because the check is applied inconsistently, a low-privileged authenticated session can obtain the same data view as more privileged accounts.

Attack Vector

Exploitation requires network reachability to the Hyperion Financial Management HTTP interface and a low-privileged account. The attacker sends crafted requests to endpoints in the Security component that fail to enforce authorization. No user interaction is required, and attack complexity is low. Public proof-of-concept code is not available at the time of publication, and the flaw is not listed in the CISA Known Exploited Vulnerabilities catalog. The EPSS model estimates the exploitation probability at 0.265%.

No verified exploit code is available. See the Oracle Security Alert August 2026 for vendor-supplied technical details.

Detection Methods for CVE-2026-70935

Indicators of Compromise

Unexpected HTTP requests to Hyperion Financial Management Security component endpoints originating from accounts with limited business roles.
Authenticated sessions that access data volumes or entities outside a user's assigned scope.
Application error spikes or partial service unavailability aligning with unusual authenticated request patterns.

Detection Strategies

Review Hyperion Financial Management application logs for authorization failures paired with successful data retrieval by the same low-privileged account.
Correlate HTTP access logs with Hyperion role assignments to surface out-of-scope data access.
Alert on repeated requests from a single session to Security component URLs that enumerate users, roles, or entities.

Monitoring Recommendations

Forward Hyperion application, IIS, and WebLogic logs to a centralized SIEM for retention and correlation.
Baseline normal request volumes per role and alert on deviations against Security component endpoints.
Monitor authentication events for privilege enumeration or lateral role probing following successful low-privileged logins.

How to Mitigate CVE-2026-70935

Immediate Actions Required

Apply the fixes documented in the Oracle Security Alert August 2026 to all Hyperion Financial Management 11.2.25.0.000 deployments.
Inventory all Oracle Hyperion instances exposed to internal or external HTTP networks and prioritize patching internet-reachable systems.
Review recent access logs for signs of unauthorized data retrieval by low-privileged accounts.

Patch Information

Oracle addresses CVE-2026-70935 in the August 2026 Security Alert bundle. Administrators should download the patch through My Oracle Support and follow the Hyperion Financial Management upgrade procedure. Consult the Oracle Security Alert August 2026 for the exact patch identifiers and prerequisite readiness steps.

Workarounds

Restrict network access to the Hyperion Financial Management HTTP interface using firewall rules or VPN gating until patches are applied.
Enforce least-privilege role assignments and remove unnecessary Hyperion accounts, especially service or shared users.
Enable enhanced audit logging on the Security component to shorten detection time for authorization abuse.

bash

# Configuration example
# Restrict Hyperion Financial Management HTTP access at the network layer
# Replace 10.0.0.0/24 with the trusted administrative subnet
iptables -A INPUT -p tcp --dport 443 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP