CVE-2026-70742: Oracle Hyperion Financial Reporting RCE

CVE-2026-70742 Overview

CVE-2026-70742 is a high-severity vulnerability in the Oracle Hyperion Financial Reporting product, part of the Oracle Hyperion suite. The flaw resides in the Server component and affects supported version 11.2.25.0.000. An authenticated attacker with low privileges can exploit the issue over the network via HTTPS. Successful exploitation results in complete takeover of the Oracle Hyperion Financial Reporting instance, compromising confidentiality, integrity, and availability. Oracle published details in the Oracle Security Alert advisory.

Critical Impact
A low-privileged remote attacker can fully compromise Oracle Hyperion Financial Reporting, gaining control over financial reporting data and server operations.

Affected Products

Oracle Hyperion Financial Reporting 11.2.25.0.000
Oracle Hyperion Financial Reporting Server component
Deployments exposing Financial Reporting services over HTTPS

Discovery Timeline

2026-08-18 - CVE-2026-70742 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70742

Vulnerability Analysis

The vulnerability affects the Server component of Oracle Hyperion Financial Reporting. Oracle classifies the issue as easily exploitable and network-accessible over HTTPS. An attacker requires only low-privileged credentials on the target environment to trigger the flaw. Successful exploitation yields takeover of the Financial Reporting application, meaning the attacker can read, modify, and disrupt financial reporting data and services. The EPSS probability is 0.447% at the 37.38 percentile, reflecting current observed exploitation likelihood rather than technical exploitability.

Root Cause

Oracle has not published a detailed root cause analysis in public references. The advisory identifies the Server component of Hyperion Financial Reporting as the affected surface. The vector characteristics — network access, low complexity, low privileges, no user interaction, and unchanged scope with full confidentiality, integrity, and availability impact — are consistent with a server-side flaw reachable through an authenticated HTTPS endpoint. Refer to the Oracle Security Alert for vendor-authoritative technical detail.

Attack Vector

An attacker authenticates to the Hyperion Financial Reporting server with low-privileged credentials. The attacker then issues crafted HTTPS requests to the vulnerable server component. The exploitation path does not require user interaction and does not cross a security scope boundary. Because scope is unchanged and impact spans all three CIA properties, the attacker inherits full control of the Financial Reporting service context.

// No verified public exploit code is available for CVE-2026-70742.
// See the Oracle Security Alert (cspuaug2026) for authoritative details.

Detection Methods for CVE-2026-70742

Indicators of Compromise

Unexpected authenticated HTTPS requests to Hyperion Financial Reporting server endpoints from unusual source hosts or accounts.
Creation, modification, or deletion of financial reports, users, or scheduled jobs outside change-management windows.
New administrative sessions or role changes originating from low-privileged accounts.

Detection Strategies

Correlate Hyperion application logs with web server and reverse-proxy HTTPS access logs to identify anomalous request patterns.
Alert on privilege changes, configuration edits, and report-definition modifications performed by non-administrative accounts.
Baseline normal Financial Reporting API traffic and flag deviations in request volume, endpoint distribution, or payload size.

Monitoring Recommendations

Forward Hyperion server, application server, and web tier logs to a centralized SIEM for retention and correlation.
Monitor authentication events for low-privileged accounts that suddenly access administrative or export functionality.
Track outbound connections from Hyperion hosts to detect post-compromise data staging or command-and-control activity.

How to Mitigate CVE-2026-70742

Immediate Actions Required

Apply the fixes referenced in Oracle's August 2026 Critical Patch Update Security Alert without delay.
Inventory all Oracle Hyperion Financial Reporting 11.2.25.0.000 deployments, including disaster recovery and test environments.
Restrict network access to Hyperion Financial Reporting servers to trusted management networks and known application clients.
Rotate credentials for accounts with access to Hyperion Financial Reporting, prioritizing service and shared accounts.

Patch Information

Oracle addresses CVE-2026-70742 in the Oracle Security Alert cspuaug2026. Administrators should apply the Critical Patch Update associated with this advisory to Oracle Hyperion Financial Reporting version 11.2.25.0.000. Validate patch installation in non-production environments before promoting to production, and confirm that dependent Hyperion components remain compatible after patching.

Workarounds

Enforce network segmentation so only authorized application tiers and administrators can reach Hyperion Financial Reporting over HTTPS.
Apply least-privilege review of all Hyperion accounts and disable or remove unused low-privileged accounts that could be leveraged as an authenticated attack starting point.
Require multi-factor authentication at the identity provider or reverse proxy layer for all sessions terminating at Hyperion Financial Reporting.

bash

# Example: restrict inbound HTTPS access to Hyperion Financial Reporting
# to a defined management subnet using iptables
iptables -A INPUT -p tcp --dport 443 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP