CVE-2026-70745: Oracle Hyperion Financial Reporting RCE

CVE-2026-70745 Overview

CVE-2026-70745 is a critical vulnerability in the Oracle Hyperion Financial Reporting product of Oracle Hyperion, specifically in the Server component. The flaw affects version 11.2.25.0.000 and allows an unauthenticated attacker with network access via HTTP to compromise the application. Successful exploitation results in full takeover of Oracle Hyperion Financial Reporting, impacting confidentiality, integrity, and availability. Oracle disclosed the issue in the Oracle Security Alert August 2026.

Critical Impact
An unauthenticated remote attacker can take over Oracle Hyperion Financial Reporting servers over the network with low attack complexity and no user interaction.

Affected Products

Oracle Hyperion Financial Reporting 11.2.25.0.000
Oracle Hyperion (Server component)
Deployments exposing Hyperion Financial Reporting HTTP services

Discovery Timeline

2026-08-18 - CVE-2026-70745 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70745

Vulnerability Analysis

CVE-2026-70745 affects the Server component of Oracle Hyperion Financial Reporting, an enterprise financial reporting platform used to author, manage, and view financial reports against Hyperion data sources. The vulnerability is reachable over HTTP without authentication, meaning any attacker who can send network traffic to the Hyperion Financial Reporting server can attempt exploitation.

Oracle categorizes the outcome as a takeover of Oracle Hyperion Financial Reporting, indicating that a successful attacker gains control over the application with impact to confidentiality, integrity, and availability of the reporting environment. Oracle has not published detailed root-cause information in the public advisory. The Oracle Security Alert entry is the authoritative reference for patch details and affected component context.

The EPSS score is 0.486% (39.988 percentile) as of 2026-08-20, and no public exploit or CISA KEV listing is currently associated with this CVE.

Root Cause

Oracle's advisory does not publicly disclose the underlying defect class for CVE-2026-70745. Based on the exposure profile — an unauthenticated, network-reachable HTTP endpoint in the Server component leading to full application takeover — the flaw is consistent with a server-side pre-authentication weakness such as improper authentication, unsafe request handling, or injection in a request-processing path. Refer to the Oracle Security Alert August 2026 for authoritative details.

Attack Vector

Exploitation requires network access to the Hyperion Financial Reporting HTTP interface. An attacker sends a crafted HTTP request to the exposed Server component without needing credentials or user interaction. Because Hyperion Financial Reporting deployments are typically integrated with financial data sources and identity systems, a successful takeover exposes sensitive financial reports, report definitions, and downstream data connections.

No verified proof-of-concept is available. See the Oracle Security Alert
August 2026 for authoritative technical details and patch guidance:
https://www.oracle.com/security-alerts/cspuaug2026.html

Detection Methods for CVE-2026-70745

Indicators of Compromise

Unexpected HTTP requests to Hyperion Financial Reporting endpoints from untrusted or external source IP addresses.
New administrative users, scheduled jobs, or report definitions created without a corresponding change ticket.
Outbound network connections from the Hyperion Financial Reporting server to unknown hosts following anomalous HTTP traffic.

Detection Strategies

Correlate web server and application logs on the Hyperion Financial Reporting Server for unauthenticated requests reaching sensitive handlers.
Alert on process spawning from the Hyperion Financial Reporting application server process, especially command shells or scripting interpreters.
Baseline normal HTTP request patterns to Hyperion Financial Reporting and flag deviations in method, URI, or payload size.

Monitoring Recommendations

Forward Hyperion Financial Reporting web, application, and OS logs to a centralized SIEM for retention and correlation.
Monitor for changes to Hyperion configuration files, report repositories, and service account activity.
Track authentication and authorization events across integrated Hyperion components to detect lateral movement following a server takeover.

How to Mitigate CVE-2026-70745

Immediate Actions Required

Apply the fixes referenced in the Oracle Security Alert August 2026 to Oracle Hyperion Financial Reporting 11.2.25.0.000.
Restrict network access to Hyperion Financial Reporting HTTP endpoints to trusted internal networks and VPN users only.
Review Hyperion administrator accounts, scheduled tasks, and report definitions for unauthorized changes.

Patch Information

Oracle addresses CVE-2026-70745 in the Oracle Security Alert published August 2026. Administrators should consult the Oracle Security Alert August 2026 for the specific patch identifiers, prerequisites, and installation instructions applicable to Oracle Hyperion Financial Reporting 11.2.25.0.000. Apply the patch to all production, disaster recovery, and non-production Hyperion Financial Reporting servers.

Workarounds

Place Hyperion Financial Reporting behind a reverse proxy or web application firewall that enforces authentication before requests reach the Server component.
Block external network access to Hyperion Financial Reporting HTTP ports at the perimeter until patches are applied.
Disable or isolate any Hyperion Financial Reporting instances that are not actively required for business operations.

bash

# Example: restrict inbound HTTP access to Hyperion Financial Reporting
# Replace <hfr_port> and trusted CIDR with your environment values
iptables -A INPUT -p tcp --dport <hfr_port> -s 10.0.0.0/8 -j ACCEPT
iptables -A INPUT -p tcp --dport <hfr_port> -j DROP