CVE-2026-70758 Overview
CVE-2026-70758 affects the Oracle Hyperion Financial Reporting product within Oracle Hyperion, specifically the Server component. The supported version affected is 11.2.25.0.000. The flaw allows a low-privileged attacker with logon access to the infrastructure where Oracle Hyperion Financial Reporting executes to compromise the application. Successful exploitation can enable unauthorized creation, deletion, or modification of critical data, along with unauthorized read access to a subset of accessible data. Oracle documented the issue in the August 2026 Critical Patch Update advisory.
Critical Impact
Successful exploitation grants an authenticated local attacker the ability to modify or delete data across all Oracle Hyperion Financial Reporting accessible datasets and read a subset of that data.
Affected Products
- Oracle Hyperion Financial Reporting (component: Server)
- Affected version: 11.2.25.0.000
- Oracle Hyperion product family
Discovery Timeline
- 2026-08-18 - CVE-2026-70758 published to NVD
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-70758
Vulnerability Analysis
The vulnerability resides in the Server component of Oracle Hyperion Financial Reporting version 11.2.25.0.000. An attacker who already holds low-privilege credentials and can log on to the infrastructure running the product can leverage the flaw to compromise the application. Oracle classifies the exploitation as difficult, indicating that specialized conditions or timing likely need to be met. Impact concentrates on data integrity, with a secondary confidentiality effect. Availability is not affected, so the service continues to run while data may be silently altered or destroyed.
Root Cause
Oracle's advisory does not disclose specific root-cause internals for CVE-2026-70758. The behavior described aligns with a broken access control or improper authorization weakness on server-side operations, where a low-privileged authenticated user can invoke functionality that should be restricted to higher-privileged roles. See the Oracle Security Alert for the official advisory.
Attack Vector
The attack vector is local. An attacker must first authenticate to the infrastructure hosting Oracle Hyperion Financial Reporting with at least low-level privileges. From that foothold, the attacker abuses the server component to perform unauthorized create, update, and delete operations against reporting data, and to read a subset of otherwise-restricted data. No user interaction is required, and the scope remains unchanged. Public exploit code is not available, and the vulnerability is not listed in the CISA Known Exploited Vulnerabilities catalog.
No verified proof-of-concept code has been published. Refer to the Oracle Security Alert for authoritative technical details.
Detection Methods for CVE-2026-70758
Indicators of Compromise
- Unexpected creation, modification, or deletion of Hyperion Financial Reporting objects, reports, or metadata by non-administrative accounts.
- Access to reporting datasets by user accounts whose role should not permit read operations on those objects.
- Anomalous local logon sessions on the Hyperion Financial Reporting server followed by application-level write activity.
Detection Strategies
- Enable and centrally forward Hyperion Financial Reporting audit logs to a SIEM to correlate low-privileged account activity with sensitive data changes.
- Baseline normal report authoring and deletion patterns per user role, then alert on deviations such as bulk deletions or off-hours modifications.
- Monitor host-level logon events on the Hyperion server and correlate them with application actions performed shortly after authentication.
Monitoring Recommendations
- Alert on privilege-boundary violations where a low-privileged principal performs operations reserved for administrators.
- Track file and configuration changes on the Hyperion Financial Reporting Server directories for unauthorized modifications.
- Review Oracle Hyperion access reports weekly for account role drift and stale low-privileged accounts with logon rights to the host.
How to Mitigate CVE-2026-70758
Immediate Actions Required
- Apply the fixes referenced in the Oracle August 2026 Critical Patch Update advisory to any deployment of Oracle Hyperion Financial Reporting 11.2.25.0.000.
- Inventory accounts with logon rights to the Hyperion Financial Reporting infrastructure and remove access that is not operationally required.
- Rotate credentials for low-privileged service and interactive accounts on the affected servers.
Patch Information
Oracle addressed CVE-2026-70758 as part of the August 2026 Critical Patch Update. Administrators should consult the Oracle Security Alert for the specific patch bundle, prerequisites, and installation instructions applicable to Oracle Hyperion Financial Reporting 11.2.25.0.000.
Workarounds
- Restrict interactive and remote logon to the Hyperion Financial Reporting server to administrators only, pending patch deployment.
- Enforce least-privilege role assignments within Hyperion Financial Reporting and remove elevated permissions from shared or generic accounts.
- Enable detailed application and OS auditing to raise the cost of exploitation and improve post-incident forensics.
# Example: restrict local logon on the Hyperion server (Linux)
# Limit interactive SSH access to a dedicated admin group
sudo groupadd hyperion-admins
sudo usermod -aG hyperion-admins <admin_user>
echo 'AllowGroups hyperion-admins' | sudo tee -a /etc/ssh/sshd_config
sudo systemctl restart sshd
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
