CVE-2026-70769: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-70769 Overview

CVE-2026-70769 is a 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 unauthenticated attacker with network access over HTTP can exploit the weakness, though successful exploitation is difficult and requires specific conditions.

Successful attacks can expose all data accessible to Oracle Hyperion Financial Reporting and allow unauthorized modification, insertion, or deletion of a subset of that data. Oracle disclosed the issue as part of the August 2026 Critical Patch Update Advisory.

Critical Impact
Unauthenticated network attackers may gain complete read access to Oracle Hyperion Financial Reporting data and partial write access to it.

Affected Products

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

Discovery Timeline

2026-08-18 - CVE-2026-70769 published to the National Vulnerability Database
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70769

Vulnerability Analysis

CVE-2026-70769 affects the Server component of Oracle Hyperion Financial Reporting 11.2.25.0.000. The Oracle advisory does not disclose a specific weakness class, but the vulnerability is reachable remotely over HTTP without authentication. Exploitation is characterized as difficult, indicating dependencies on specific timing, configuration, or environmental preconditions.

A successful attack yields high confidentiality impact and low integrity impact. An attacker can read all data accessible to the reporting application and modify a limited subset of records. Availability is not impacted, so the service continues operating during and after exploitation, which can delay detection.

Because Hyperion Financial Reporting typically stores sensitive financial statements, forecasts, and consolidated ledgers, unauthorized access carries significant regulatory and business risk. Compromise can facilitate financial fraud, insider trading exposure, or manipulation of reports consumed by executives and auditors.

Root Cause

Oracle has not published a detailed root cause analysis. The August 2026 Critical Patch Update advisory identifies the Server component as the affected surface and confirms that exploitation occurs over HTTP without prior authentication. Refer to the Oracle Security Alert for the vendor's summary.

Attack Vector

The attack vector is network-based over HTTP. An attacker sends crafted requests to an exposed Hyperion Financial Reporting server without providing credentials. High attack complexity means the attacker must satisfy additional conditions outside their direct control, such as specific server state or configuration, to achieve exploitation.

No public proof-of-concept, exploit code, or CISA Known Exploited Vulnerabilities Catalog entry exists for this CVE at the time of publication. The EPSS probability of 0.283% (percentile 20.888) reflects a low estimated likelihood of exploitation activity in the near term.

Technical exploitation details are not publicly available. See the Oracle Security Alert for the authoritative advisory.

Detection Methods for CVE-2026-70769

Indicators of Compromise

Unauthenticated HTTP requests to Hyperion Financial Reporting server endpoints originating from unexpected external or internal source addresses.
Anomalous read activity in Hyperion Financial Reporting audit logs, particularly bulk retrieval of reports, ledgers, or consolidated financial data.
Unexpected create, update, or delete operations against Hyperion data objects without a corresponding authenticated user session.

Detection Strategies

Enable and centralize Oracle Hyperion Financial Reporting application and web server access logs, then alert on request patterns targeting the Server component without authenticated sessions.
Deploy web application firewall rules in front of the Hyperion HTTP endpoints to flag or block malformed and anomalous request sequences.
Correlate HTTP request telemetry with database query volumes to identify sudden increases in read operations against financial reporting tables.

Monitoring Recommendations

Monitor egress traffic from Hyperion servers for large or repeated data transfers to external destinations.
Track failed and anonymous authentication events on the Hyperion middle tier to spot enumeration attempts preceding exploitation.
Baseline normal reporting workflows and alert on off-hours or high-volume access to sensitive financial reports.

How to Mitigate CVE-2026-70769

Immediate Actions Required

Apply the fixes referenced in the Oracle August 2026 Critical Patch Update as soon as change windows allow.
Inventory all Oracle Hyperion Financial Reporting 11.2.25.0.000 deployments, including test and disaster-recovery environments.
Restrict network reachability of Hyperion Financial Reporting HTTP endpoints to trusted management networks until patches are applied.
Review Hyperion audit and access logs for unauthorized reads or modifications dating back to the CVE publication date.

Patch Information

Oracle addressed CVE-2026-70769 in the August 2026 Critical Patch Update. Administrators should consult the Oracle Security Alert for the specific patch identifiers, prerequisites, and installation guidance applicable to their Hyperion deployment.

Workarounds

Place Hyperion Financial Reporting servers behind a reverse proxy or web application firewall that enforces authentication before requests reach the application.
Enforce network segmentation and IP allowlisting so that only authorized corporate finance workstations can reach the Hyperion HTTP interface.
Disable or restrict any Hyperion Financial Reporting features not required for business operations to reduce the exposed attack surface.
Increase logging verbosity on the Server component and forward events to a SIEM for continuous review until patches are deployed.