CVE-2026-70965: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-70965 Overview

CVE-2026-70965 is an improper access control vulnerability [CWE-284] affecting Oracle Hyperion Infrastructure Technology, specifically the Installation and Configuration component. The flaw impacts supported version 11.2.25.0.000. A low-privileged attacker with network access over HTTP can exploit the weakness to compromise the affected product. Successful exploitation results in full takeover of Oracle Hyperion Infrastructure Technology, impacting confidentiality, integrity, and availability. Oracle addressed the issue in the Oracle Security Alert August 2026.

Critical Impact
Authenticated network attackers can take over Oracle Hyperion Infrastructure Technology and obtain full access to enterprise financial and performance management data.

Affected Products

Oracle Hyperion Infrastructure Technology 11.2.25.0.000
Component: Installation and Configuration
Oracle Hyperion product family

Discovery Timeline

2026-08-18 - CVE-2026-70965 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-70965

Vulnerability Analysis

CVE-2026-70965 resides in the Installation and Configuration component of Oracle Hyperion Infrastructure Technology. The vulnerability is classified as improper access control [CWE-284], meaning the product does not correctly restrict actions available to authenticated users. An attacker who already holds low-level privileges can leverage the flaw to escalate access and take over the Hyperion environment.

Because Hyperion Infrastructure Technology underpins Oracle's Enterprise Performance Management (EPM) stack, a compromise exposes financial consolidation, planning, and reporting workloads to unauthorized modification and disclosure. Oracle rates the confidentiality, integrity, and availability impact as high.

Root Cause

The root cause is missing or insufficient authorization enforcement inside the Installation and Configuration component. Requests that should require administrative privilege are accessible to accounts with only basic authenticated access. Oracle has not published implementation-level detail beyond the advisory summary.

Attack Vector

Exploitation requires network reachability to the Hyperion HTTP interface and valid low-privilege credentials. No user interaction is required. Attack complexity is low, and the scope remains unchanged. The vulnerability does not require code execution primitives, only crafted HTTP requests against the vulnerable component.

No public proof-of-concept code has been observed. The current EPSS probability is 0.286% at percentile 21.217, and the vulnerability is not listed in the CISA KEV catalog. See the Oracle Security Alert August 2026 for advisory details.

Detection Methods for CVE-2026-70965

Indicators of Compromise

Unexpected administrative actions performed by low-privileged Hyperion user accounts
Anomalous HTTP requests to Installation and Configuration endpoints from non-administrator sessions
Creation of new Hyperion service accounts or privilege changes outside of change windows
Unusual file writes or configuration changes on Hyperion middleware hosts

Detection Strategies

Enable and forward Hyperion application, WebLogic, and OHS access logs to a centralized log platform for correlation
Alert on privilege escalation events and configuration changes initiated by non-administrative principals
Baseline normal Installation and Configuration endpoint usage and flag deviations by source IP, user, and request pattern

Monitoring Recommendations

Monitor authentication events for reuse of low-privileged Hyperion credentials from unusual hosts
Track process execution and file integrity on Hyperion middleware servers to detect post-exploitation activity
Review outbound network activity from Hyperion hosts for unauthorized data movement

How to Mitigate CVE-2026-70965

Immediate Actions Required

Apply the fixes published in the Oracle Security Alert August 2026 to all Oracle Hyperion Infrastructure Technology 11.2.25.0.000 deployments
Inventory Hyperion accounts and revoke unused or excessive low-privilege access
Restrict network access to Hyperion HTTP interfaces to trusted management networks and jump hosts
Rotate credentials for Hyperion service and functional accounts after patching

Patch Information

Oracle published remediation guidance in the Oracle Security Alert August 2026. Administrators should follow the alert to obtain the patch bundle applicable to Oracle Hyperion Infrastructure Technology and apply it during a maintenance window. Validate the fix in a non-production environment before promoting to production.

Workarounds

Place Hyperion HTTP endpoints behind a reverse proxy or WAF that enforces authentication and IP allow-listing
Disable or firewall the Installation and Configuration component from general user network segments until patching is complete
Enforce least privilege on Hyperion roles and remove standing access from accounts that do not require it

bash

# Example: restrict HTTP access to Hyperion management interface via iptables
iptables -A INPUT -p tcp --dport 19000 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 19000 -j DROP