CVE-2026-70842: Oracle Hyperion Financial Management Bypass

CVE-2026-70842 Overview

CVE-2026-70842 affects the Security component of Oracle Hyperion Financial Management version 11.2.25.0.000. A low-privileged attacker with local logon access to the infrastructure hosting the application can exploit this vulnerability. Successful exploitation allows unauthorized creation, deletion, or modification of critical data, along with unauthorized read access to all data accessible by Oracle Hyperion Financial Management. The scope changes during exploitation, meaning attacks can impact resources beyond the vulnerable component.

Critical Impact
Local low-privileged attackers can compromise confidentiality and integrity across Oracle Hyperion Financial Management and additional in-scope products.

Affected Products

Oracle Hyperion Financial Management 11.2.25.0.000
Oracle Hyperion (Security component)

Discovery Timeline

2026-08-18 - CVE-2026-70842 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70842

Vulnerability Analysis

The vulnerability resides in the Security component of Oracle Hyperion Financial Management. Oracle classifies the flaw as easily exploitable and requires the attacker to hold valid low-privileged credentials on the underlying infrastructure. The vulnerability triggers a scope change during exploitation, allowing effects to extend beyond the vulnerable component into other Oracle Hyperion products or data stores.

Successful exploitation results in high confidentiality and integrity impact. Attackers can read, create, modify, or delete any data accessible by Oracle Hyperion Financial Management. Availability is not affected according to the Oracle advisory. This class of scope-changing security flaw typically indicates a broken access control or authorization bypass condition within the security enforcement layer.

Root Cause

Oracle has not released detailed root cause information beyond the component designation. The affected component is the Security module of Oracle Hyperion Financial Management, which enforces authentication and authorization for financial consolidation operations. Consult the Oracle Security Alert for vendor-supplied technical context.

Attack Vector

The attack vector is local. An attacker must first authenticate to the infrastructure where Oracle Hyperion Financial Management executes. Once logged on with low privileges, the attacker can leverage the flaw in the Security component to escalate access to critical Hyperion Financial Management data and to resources beyond the immediate scope of the product.

No public proof-of-concept exploit is currently available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog. The EPSS score is 0.16%, indicating low observed exploitation probability at this time.

Detection Methods for CVE-2026-70842

Indicators of Compromise

Unexpected creation, modification, or deletion of financial records within Hyperion Financial Management applications.
Anomalous access to Hyperion consolidation data by low-privileged local accounts.
Unusual interactive or remote logon sessions on Hyperion application servers followed by administrative activity.

Detection Strategies

Audit access logs on Hyperion Financial Management servers for privilege changes tied to non-administrative accounts.
Correlate operating system logon events with Hyperion application-layer audit events to identify horizontal or vertical privilege escalation.
Baseline normal Hyperion Financial Management data-modification volumes and alert on statistical deviations.

Monitoring Recommendations

Enable and centrally forward Hyperion Financial Management audit logs to a SIEM for retention and correlation.
Monitor Windows Event Log IDs 4624 (logon) and 4672 (special privileges assigned) on Hyperion hosts.
Track file, registry, and database changes on Hyperion application servers via endpoint telemetry.

How to Mitigate CVE-2026-70842

Immediate Actions Required

Apply the Oracle security patch referenced in the Oracle Security Alert for the August 2026 advisory cycle.
Inventory Hyperion Financial Management deployments and confirm which hosts run version 11.2.25.0.000.
Restrict interactive and remote logon rights on Hyperion Financial Management servers to a minimal set of vetted administrators.

Patch Information

Oracle published remediation guidance in the August 2026 Critical Patch Update advisory. Review the Oracle Security Alert for patch identifiers and installation procedures specific to Oracle Hyperion Financial Management 11.2.25.0.000.

Workarounds

Enforce least privilege on all local and domain accounts with access to Hyperion Financial Management infrastructure.
Segment Hyperion application servers on isolated network zones with strict jump-host access controls.
Require multi-factor authentication for any account able to log on to Hyperion Financial Management hosts.
Increase audit-log verbosity on the Security component until patching is complete.

bash

# Example: restrict interactive logon on a Hyperion host (Windows)
# Use Group Policy: Computer Configuration > Windows Settings > Security Settings
#   > Local Policies > User Rights Assignment > Allow log on locally
# Remove broad groups and add only the dedicated Hyperion administrators group
secedit /export /cfg C:\hyperion_baseline.cfg
# Review 'SeInteractiveLogonRight' and remove non-essential SIDs, then reapply:
secedit /configure /db secedit.sdb /cfg C:\hyperion_baseline.cfg /overwrite