CVE-2026-62564: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-62564 Overview

CVE-2026-62564 is an information disclosure vulnerability in the Oracle Hyperion Infrastructure Technology product, specifically within the Installation and Configuration component. The affected supported version is 11.2.25.0.000. A low-privileged attacker with local logon access to the infrastructure where Oracle Hyperion Infrastructure Technology executes can exploit this flaw. Successful exploitation results in unauthorized access to critical data or complete access to all Oracle Hyperion Infrastructure Technology accessible data. Oracle disclosed this vulnerability in the August 2026 Critical Patch Update Security Alert.

Critical Impact
A local, low-privileged attacker can obtain unauthorized read access to all data accessible by Oracle Hyperion Infrastructure Technology, resulting in high confidentiality impact.

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-2026-62564 published to NVD
2026-08-20 - Last updated in NVD database

Technical Details for CVE-2026-62564

Vulnerability Analysis

The vulnerability resides in the Installation and Configuration component of Oracle Hyperion Infrastructure Technology. It permits a local attacker holding valid low-privilege credentials on the host to read data that should be restricted. The flaw affects confidentiality only. Integrity and availability of the system remain unaffected according to the published CVSS vector.

Oracle classifies the vulnerability as easily exploitable. Exploitation does not require user interaction or elevated privileges. The attacker must already possess logon access to the infrastructure hosting the Hyperion deployment. This typically restricts the threat to insiders, contractors, or attackers who have already established a foothold on the host.

Root Cause

Oracle's advisory does not disclose the specific technical root cause. The Installation and Configuration component handles setup, deployment, and configuration data for the Hyperion stack. Weaknesses in this component often stem from improper access controls on configuration files, credential stores, or configuration interfaces. The scope is unchanged, meaning the exploited component and the impacted resource share the same security authority.

Attack Vector

The attack vector is local. An authenticated user on the Hyperion host initiates the exploitation path. No network access is required. The attacker leverages existing low-privilege access to interact with vulnerable Installation and Configuration functionality. This results in disclosure of sensitive data including potentially credentials, connection strings, or business data managed by the Hyperion platform. Refer to the Oracle Security Alert for authoritative technical detail.

No public proof-of-concept code is available. The EPSS score is 0.145%, reflecting a low predicted probability of near-term exploitation.

Detection Methods for CVE-2026-62564

Indicators of Compromise

Unexpected access to Hyperion configuration files, installation directories, or credential stores by non-administrative local accounts.
Anomalous read operations against files under the Hyperion Installation and Configuration paths from low-privilege users.
Local account activity on Hyperion hosts outside documented maintenance windows.

Detection Strategies

Enable file system auditing on Hyperion installation and configuration directories to log read access events.
Correlate local logon events on Hyperion hosts with subsequent access to sensitive configuration or data paths.
Baseline normal administrative activity on Hyperion servers and alert on deviations by low-privileged accounts.

Monitoring Recommendations

Forward Windows Security or Linux audit logs from Hyperion hosts to a centralized SIEM for continuous review.
Monitor process execution and file access patterns tied to the Installation and Configuration component.
Review Oracle Hyperion access and audit logs for unusual queries or data extraction by non-administrative users.

How to Mitigate CVE-2026-62564

Immediate Actions Required

Apply the Oracle Critical Patch Update Security Alert published in August 2026 to Oracle Hyperion Infrastructure Technology 11.2.25.0.000.
Inventory all Hyperion deployments and confirm patch status on each host running the affected version.
Restrict interactive and remote logon rights on Hyperion infrastructure hosts to a minimal set of administrators.

Patch Information

Oracle addressed CVE-2026-62564 in the August 2026 Critical Patch Update Security Alert. Administrators should download and apply the patch documented in the Oracle Security Alert. Verify successful patch application and validate that the Installation and Configuration component is running the updated build.

Workarounds

Enforce least privilege on all local accounts on Hyperion hosts, removing unnecessary logon rights.
Harden file system permissions on Hyperion installation and configuration directories to block access from non-administrative accounts.
Isolate Hyperion infrastructure hosts in dedicated administrative tiers with limited operator access.
Increase audit logging on Hyperion servers until the vendor patch is applied.

bash

# Configuration example
# Refer to the Oracle August 2026 Critical Patch Update for authoritative remediation guidance:
# https://www.oracle.com/security-alerts/cspuaug2026.html