CVE-2026-62538: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-62538 Overview

CVE-2026-62538 is a high-severity 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. An unauthenticated attacker with network access via HTTPS can exploit this flaw, though successful exploitation requires overcoming high attack complexity. Oracle disclosed the issue in the Oracle Security Alert published for August 2026.

Critical Impact
Successful exploitation allows unauthorized creation, deletion, or modification of critical data, along with complete read access to all data accessible by Oracle Hyperion Infrastructure Technology.

Affected Products

Oracle Hyperion Infrastructure Technology, version 11.2.25.0.000
Oracle Hyperion product family (Installation and Configuration component)
Deployments exposing the Hyperion HTTPS interface to network-accessible clients

Discovery Timeline

2026-08-18 - CVE-2026-62538 published to the National Vulnerability Database
2026-08-20 - Last updated in the NVD database
2026-08-20 - EPSS score published at 0.341% (percentile 27.303)

Technical Details for CVE-2026-62538

Vulnerability Analysis

The vulnerability resides in the Installation and Configuration component of Oracle Hyperion Infrastructure Technology. A remote, unauthenticated attacker can reach the vulnerable interface over HTTPS without any user interaction. Successful exploitation grants the attacker the ability to read, create, modify, or delete data accessible to the Hyperion Infrastructure Technology deployment.

Exploitation carries high attack complexity, indicating that the attacker must satisfy conditions outside their direct control before an attack succeeds. Availability is not affected, but both confidentiality and integrity impacts are rated high. Oracle has not published detailed root-cause information, and no public proof-of-concept exploit is available.

Root Cause

Oracle's advisory identifies the flaw within the Installation and Configuration subsystem of Hyperion Infrastructure Technology. The specific weakness type has not been assigned a CWE identifier in the NVD entry. Refer to the Oracle Security Alert for vendor-supplied technical context.

Attack Vector

The attack originates from the network and traverses HTTPS to reach the Hyperion Infrastructure Technology service. No credentials or user interaction are required. Because exploitation modifies or exfiltrates data at the application layer, attackers can pivot to downstream systems that trust Hyperion data feeds. The vulnerability primarily threatens organizations that expose Hyperion management interfaces to broad internal networks or the internet.

No verified exploitation code is publicly available. See the Oracle Security Alert for authoritative technical details.

Detection Methods for CVE-2026-62538

Indicators of Compromise

Unexpected HTTPS requests to Hyperion Infrastructure Technology endpoints from unusual source IPs
Unauthorized modification, creation, or deletion of records in Hyperion-managed datastores
New administrative or configuration changes within Hyperion Installation and Configuration logs without a corresponding change ticket

Detection Strategies

Baseline normal traffic patterns to Hyperion HTTPS services and alert on anomalous request rates or payload sizes
Review Hyperion application and web server logs for unauthenticated requests that succeed against configuration endpoints
Correlate Hyperion data changes with authenticated administrator activity to identify unattributed modifications

Monitoring Recommendations

Forward Hyperion access, error, and audit logs to a centralized SIEM for cross-source correlation
Monitor outbound traffic from Hyperion hosts for signs of data exfiltration
Track integrity of Hyperion configuration files and databases using file integrity monitoring

How to Mitigate CVE-2026-62538

Immediate Actions Required

Apply the Oracle Critical Patch Update referenced in the August 2026 Oracle Security Alert to any deployment running Hyperion Infrastructure Technology 11.2.25.0.000
Restrict network access to Hyperion HTTPS interfaces to trusted management networks only
Audit Hyperion accounts and configuration data for unauthorized changes prior to patching

Patch Information

Oracle addresses this vulnerability through the security patches referenced in the Oracle Security Alert. Administrators should follow Oracle's documented patching procedures for Hyperion Infrastructure Technology and validate the patch level of version 11.2.25.0.000 after installation.

Workarounds

Place Hyperion Infrastructure Technology behind a reverse proxy or web application firewall that restricts access to authenticated management sessions
Enforce network segmentation so only administrative jump hosts can reach Hyperion HTTPS endpoints
Disable or limit any unauthenticated configuration endpoints until Oracle's patch is applied

bash

# Configuration example: restrict inbound HTTPS to Hyperion using host-based firewall rules
iptables -A INPUT -p tcp --dport 443 -s 10.0.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP