CVE-2026-70819: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-70819 Overview

CVE-2026-70819 affects the Security component of Oracle Hyperion Financial Management, part of the Oracle Hyperion product family. The affected supported version is 11.2.25.0.000. A low-privileged attacker with network access via Structured Query Language (SQL) can exploit this flaw to fully compromise Oracle Hyperion Financial Management. Successful exploitation results in complete takeover of the application, impacting confidentiality, integrity, and availability. Oracle addressed the issue in its published security alert.

Critical Impact
Authenticated attackers with low privileges can take over Oracle Hyperion Financial Management over the network, exposing sensitive financial consolidation data and enabling manipulation of financial records.

Affected Products

Oracle Hyperion Financial Management
Oracle Hyperion (Security component)
Version 11.2.25.0.000

Discovery Timeline

2026-08-18 - CVE-2026-70819 published to the National Vulnerability Database (NVD)
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70819

Vulnerability Analysis

The vulnerability resides in the Security component of Oracle Hyperion Financial Management. According to Oracle, the flaw is easily exploitable and allows a low-privileged attacker with network access via SQL to compromise the application. Successful attacks result in takeover of Oracle Hyperion Financial Management, with high impacts to confidentiality, integrity, and availability.

Because the attacker only needs low-level privileges and no user interaction, any authenticated user who can reach the Hyperion Financial Management service over the network can attempt exploitation. The scope is unchanged, meaning the impact is contained within the vulnerable component but still results in full application takeover.

Root Cause

Oracle's advisory attributes the issue to the Security component and describes the attack surface as SQL-based network access. This pattern is consistent with SQL Injection class weaknesses, where user-controlled input reaches a database query without adequate validation or parameterization. Oracle has not published deeper technical detail beyond the security alert.

Attack Vector

The attack vector is network-based. An authenticated attacker submits crafted SQL-bearing input to an exposed Hyperion Financial Management interface. Because the vulnerability affects the Security component, exploitation can bypass access controls and grant broader control over the application and its financial data.

No verified public proof-of-concept exploit is available at this time. Refer to the Oracle Security Alert September 2026 for vendor-supplied technical context.

Detection Methods for CVE-2026-70819

Indicators of Compromise

Unexpected SQL error messages or malformed query patterns in Hyperion Financial Management application and database logs.
Authentication events from low-privileged accounts followed by administrative actions or privilege changes within Hyperion.
Unusual data exports, dimension edits, or consolidation rule changes originating from non-administrative sessions.

Detection Strategies

Enable database auditing on the backing Oracle database and alert on queries that reference security or metadata tables from Hyperion service accounts.
Correlate web-tier request logs with database query telemetry to identify injected SQL fragments in parameters submitted to Hyperion endpoints.
Baseline normal Hyperion Financial Management user behavior and flag deviations tied to accounts with limited assigned roles.

Monitoring Recommendations

Forward Hyperion application, IIS/WebLogic, and Oracle database logs into a centralized analytics platform for correlation.
Monitor for outbound connections from Hyperion middle-tier servers that do not match documented integrations.
Track failed and successful logins by role, alerting on any low-privileged account performing security-relevant operations.

How to Mitigate CVE-2026-70819

Immediate Actions Required

Apply the fix documented in the Oracle Security Alert September 2026 to all Oracle Hyperion Financial Management 11.2.25.0.000 deployments.
Restrict network access to Hyperion Financial Management interfaces so only trusted management networks and authorized users can reach them.
Review and rotate credentials for all Hyperion Financial Management accounts, prioritizing service accounts and any account with database access.

Patch Information

Oracle has published remediation guidance in the Oracle Security Alert September 2026. Administrators should review the alert for the applicable patch bundle for Oracle Hyperion Financial Management version 11.2.25.0.000 and deploy it following Oracle's documented upgrade procedures. Validate the patch in a staging environment before rolling to production.

Workarounds

Place Hyperion Financial Management behind a Web Application Firewall (WAF) with rules that inspect and block SQL injection payloads until patching is complete.
Enforce least-privilege on all Hyperion accounts and remove unnecessary low-privileged accounts that can reach the affected component.
Segment the Hyperion database tier from general corporate networks and restrict direct database access to the application middle tier only.

bash

# Configuration example: restrict access to Hyperion Financial Management ports
# Replace the source range with your authorized management subnet
iptables -A INPUT -p tcp --dport 19000 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 19000 -j DROP