CVE-2026-70847: Oracle Hyperion Financial Management Bypass

CVE-2026-70847 Overview

CVE-2026-70847 is a vulnerability in the Security component of Oracle Hyperion Financial Management. Oracle Hyperion Financial Management version 11.2.25.0.000 is affected. A low-privileged attacker with local access to the infrastructure where Oracle Hyperion Financial Management runs can exploit this flaw. Successful exploitation leads to unauthorized access to critical data or complete access to all data accessible through Oracle Hyperion Financial Management. The vulnerability involves a scope change, meaning attacks may impact additional products beyond Hyperion Financial Management itself.

Critical Impact
Low-privileged local attackers can achieve unauthorized read access to sensitive financial data, with the potential for the compromise to extend into adjacent products through a scope change.

Affected Products

Oracle Hyperion Financial Management 11.2.25.0.000
Oracle Hyperion (Security component)
Downstream products reachable via scope change

Discovery Timeline

2026-08-18 - CVE-2026-70847 published to the National Vulnerability Database
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70847

Vulnerability Analysis

The vulnerability resides in the Security component of Oracle Hyperion Financial Management, an enterprise financial consolidation and reporting platform. The attack vector is local, requiring the attacker to already possess valid low-privileged credentials on the host infrastructure. No user interaction is needed to complete the attack.

The flaw is classified as an information disclosure issue affecting confidentiality only. Integrity and availability of the system remain intact. Because the vulnerability triggers a scope change, exploitation can expose data belonging to components outside the vulnerable module, expanding the blast radius beyond Hyperion Financial Management alone.

Attackers with logon access to the underlying infrastructure can leverage the weakness to read sensitive financial records, consolidation data, and configuration values managed by the platform. The Oracle Critical Patch Update advisory categorizes this as an easily exploitable issue.

Root Cause

Oracle has not published detailed root-cause information for CVE-2026-70847. The advisory identifies the defect in the Security component, indicating a flaw in the enforcement of access controls or data protections within the authentication and authorization subsystem of Hyperion Financial Management.

Attack Vector

Exploitation requires local logon to the infrastructure hosting Oracle Hyperion Financial Management. The attacker uses low-privileged credentials to invoke functionality that improperly discloses data. Because the scope changes during exploitation, the compromise extends the attacker's reach beyond the initially vulnerable component.

No public proof-of-concept exploit exists at this time. The EPSS probability is 0.151%, and CISA has not listed the CVE in the Known Exploited Vulnerabilities catalog.

No verified exploit code is available. Refer to the Oracle Security Advisory for the vendor's technical description.

Detection Methods for CVE-2026-70847

Indicators of Compromise

Unexpected local logons to servers hosting Oracle Hyperion Financial Management, particularly from low-privileged service or application accounts.
Anomalous read activity against Hyperion consolidation, journal, or metadata stores by accounts that do not typically access financial data.
Access to data belonging to adjacent Oracle Hyperion products from accounts scoped only to Hyperion Financial Management.

Detection Strategies

Correlate Windows or Linux logon events on Hyperion Financial Management hosts with Hyperion application audit logs to identify unauthorized data access.
Baseline typical query and reporting patterns for each service account, then alert on deviations that touch sensitive financial datasets.
Enable Oracle Hyperion audit logging for the Security component and forward events to a centralized analytics platform for review.

Monitoring Recommendations

Continuously ingest Hyperion Financial Management application, database, and OS logs into a SIEM for cross-source correlation.
Monitor privileged account activity and any escalation from low-privileged accounts on Hyperion infrastructure.
Track outbound data transfers from Hyperion servers to detect exfiltration following unauthorized reads.

How to Mitigate CVE-2026-70847

Immediate Actions Required

Apply the fixes provided in the Oracle Critical Patch Update referenced in the Oracle Security Advisory.
Inventory all Oracle Hyperion Financial Management deployments and confirm which run version 11.2.25.0.000.
Rotate credentials for local and service accounts on Hyperion infrastructure, prioritizing accounts with any level of logon rights.
Restrict interactive and remote logon rights on Hyperion Financial Management servers to a minimal set of administrators.

Patch Information

Oracle addressed CVE-2026-70847 in its August 2026 Critical Patch Update. Administrators should apply the patch published in the Oracle Security Advisory to version 11.2.25.0.000 and follow Oracle's guidance for validating the update in non-production environments before rollout.

Workarounds

Enforce strict least-privilege access on Hyperion Financial Management hosts and remove unnecessary local accounts.
Segment Hyperion infrastructure on isolated network zones and require jump-host access with multi-factor authentication.
Enable comprehensive audit logging on the Security component and review access to sensitive data on a recurring schedule until the patch is applied.

bash

# Configuration example
# Review local logon rights on the Hyperion host (Windows)
whoami /priv
net localgroup

# Enumerate Oracle Hyperion services and confirm patch level
sc query | findstr /i hyperion