CVE-2026-70784 Overview
CVE-2026-70784 is a vulnerability in the Oracle Hyperion Financial Reporting product of Oracle Hyperion, specifically within the Server component. The affected version is 11.2.25.0.000. An authenticated attacker with low privileges and local logon access to the infrastructure hosting Oracle Hyperion Financial Reporting can compromise the application. Successful exploitation permits unauthorized creation, deletion, or modification of critical data, along with unauthorized read access to a subset of data accessible by Oracle Hyperion Financial Reporting.
Critical Impact
An authenticated local attacker can modify or delete critical financial reporting data and read a subset of sensitive information, undermining the integrity of enterprise financial reporting.
Affected Products
- Oracle Hyperion Financial Reporting 11.2.25.0.000
- Oracle Hyperion (Server component)
- Deployments running the affected supported version on-premises
Discovery Timeline
- 2026-08-18 - CVE-2026-70784 published to the National Vulnerability Database (NVD)
- 2026-08-20 - Last updated in NVD database
- Oracle Critical Patch Update, August 2026 - Oracle publishes advisory in the Oracle Security Alert
Technical Details for CVE-2026-70784
Vulnerability Analysis
The vulnerability resides in the Server component of Oracle Hyperion Financial Reporting. Exploitation requires a valid low-privileged account and local logon access to the host running the application. The flaw predominantly affects integrity, allowing unauthorized create, update, and delete operations on data that the application can access. It also permits partial confidentiality impact through unauthorized read access to a subset of that data. Availability is not impacted by successful exploitation.
Although exploitation is characterized as difficult, an insider or an attacker who has already gained a foothold on the Hyperion server can tamper with financial reporting data. In enterprise environments where Hyperion drives regulatory and executive financial reporting, unauthorized data modification carries auditing, compliance, and reporting-accuracy consequences.
Root Cause
Oracle has not disclosed the specific underlying weakness class or CWE for CVE-2026-70784. Based on the published impact profile, the flaw permits an authenticated local user to perform actions that exceed the intended authorization boundaries of the Server component, resulting in write-level access to sensitive application data.
Attack Vector
The attack vector is local. The attacker must first authenticate to the infrastructure hosting Oracle Hyperion Financial Reporting with a low-privileged account. From that context, the attacker can exercise the vulnerable server-side functionality to modify or delete data and read a limited subset of accessible data. No user interaction is required, and the attack does not cross a trust boundary beyond the local host.
No public proof-of-concept, exploit code, or in-the-wild exploitation has been reported for this CVE. Refer to the Oracle Security Alert for authoritative technical detail.
Detection Methods for CVE-2026-70784
Indicators of Compromise
- Unexpected modification, creation, or deletion of Hyperion Financial Reporting artifacts (reports, books, snapshots) by low-privileged accounts.
- Anomalous local logon events on Hyperion servers followed by process activity under the Hyperion service account.
- Discrepancies between expected and actual financial report data during scheduled reconciliation.
Detection Strategies
- Enable and review Oracle Hyperion Financial Reporting audit logs for data modification actions performed by non-administrative users.
- Correlate host authentication events on Hyperion servers with subsequent application-level write operations.
- Baseline normal report authoring and modification behavior, then alert on deviations by user, time-of-day, or volume.
Monitoring Recommendations
- Forward Hyperion application logs and Windows/Linux host authentication logs to a centralized SIEM for correlation.
- Monitor privileged group membership and interactive logon rights on servers hosting Hyperion Financial Reporting.
- Alert on repeated failed authorization attempts within the Hyperion Server component that precede successful data changes.
How to Mitigate CVE-2026-70784
Immediate Actions Required
- Apply the Oracle Critical Patch Update released in August 2026 for Oracle Hyperion Financial Reporting 11.2.25.0.000 as documented in the Oracle Security Alert.
- Inventory all Hyperion Financial Reporting instances and confirm patch status against the affected version.
- Review and restrict local logon rights on Hyperion servers to only required administrators and service accounts.
Patch Information
Oracle addresses this vulnerability in its August 2026 Critical Patch Update cycle. Administrators should follow the vendor guidance in the Oracle Security Alert to obtain and deploy the fix for Oracle Hyperion Financial Reporting 11.2.25.0.000.
Workarounds
- Limit interactive and remote logon capabilities on Hyperion Financial Reporting servers to a minimal set of trusted accounts.
- Enforce least privilege for Hyperion application roles so that only necessary users have write access to reporting artifacts.
- Increase audit logging verbosity and review logs frequently until the patch is applied across all instances.
# Configuration example: restrict interactive logon on the Hyperion server (Linux)
# Only allow members of the 'hyperion-admins' group to log in locally via PAM
# /etc/security/access.conf
- : ALL EXCEPT (hyperion-admins) root : LOCAL
# Verify group membership
getent group hyperion-admins
# Review recent local logons on the Hyperion host
last -F | grep -Ev 'reboot|wtmp'
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
