CVE-2026-62477 Overview
CVE-2026-62477 is a vulnerability in the Oracle Hyperion Infrastructure Technology product, specifically within the Common Security component. The affected supported version is 11.2.25.0.000. A low-privileged attacker with network access via HTTP can exploit this flaw to compromise Oracle Hyperion Infrastructure Technology. Successful exploitation results in unauthorized creation, deletion, or modification of critical data, as well as unauthorized read access to all Hyperion Infrastructure Technology accessible data. Oracle addressed this issue in the August 2026 Critical Patch Update Security Alert.
Critical Impact
Authenticated remote attackers can read, alter, or destroy all data accessible to Oracle Hyperion Infrastructure Technology, undermining confidentiality and integrity of enterprise financial reporting systems.
Affected Products
- Oracle Hyperion Infrastructure Technology 11.2.25.0.000
- Oracle Hyperion (Common Security component)
- Deployments exposing Hyperion services over HTTP to authenticated users
Discovery Timeline
- 2026-08-18 - CVE-2026-62477 published to the National Vulnerability Database
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-62477
Vulnerability Analysis
The vulnerability resides in the Common Security component of Oracle Hyperion Infrastructure Technology. An attacker holding low-privilege credentials can send crafted HTTP requests to the Hyperion service and gain read and write access to data outside their authorization scope. The flaw does not require user interaction and can be triggered remotely across a network. Because the scope remains unchanged, the impact is confined to the vulnerable component, but that component brokers access to sensitive financial and planning data. The absence of availability impact suggests the weakness enables data-layer manipulation rather than service disruption.
Root Cause
Oracle has not published a detailed root cause analysis. The Common Security component enforces authentication and authorization for Hyperion services, and the CVSS profile is consistent with a broken access control or authorization bypass within that enforcement layer. Refer to the Oracle Security Alert for vendor-supplied technical context.
Attack Vector
The attack proceeds over the network against the Hyperion HTTP interface. The attacker authenticates with any valid low-privileged account, then issues requests that the Common Security layer fails to authorize correctly. The resulting operations grant the attacker read, create, modify, and delete privileges against data the account should not reach. No user interaction and no elevated privileges are required to complete the attack chain.
No public proof-of-concept or exploit code is available at this time. See the Oracle Security Alert for authoritative technical details.
Detection Methods for CVE-2026-62477
Indicators of Compromise
- Unexpected HTTP requests from low-privileged Hyperion accounts targeting administrative or cross-tenant endpoints.
- Anomalous create, update, or delete operations against Hyperion metadata, dimensions, or security artifacts.
- Authentication events from Hyperion service accounts followed by bulk data reads outside normal working hours.
Detection Strategies
- Ingest Hyperion web server and application logs into a centralized analytics platform and baseline per-user request patterns.
- Alert on privilege-sensitive API calls executed by accounts lacking the corresponding role assignment.
- Correlate Hyperion access logs with identity provider events to surface reused or compromised low-privilege credentials.
Monitoring Recommendations
- Enable verbose audit logging on the Hyperion Common Security component and forward logs off-host.
- Monitor database-layer changes to Hyperion repositories for modifications not tied to approved change tickets.
- Track outbound data volume from Hyperion servers to detect bulk exfiltration following a successful authorization bypass.
How to Mitigate CVE-2026-62477
Immediate Actions Required
- Apply the fixes from the Oracle August 2026 Critical Patch Update Security Alert to all Hyperion Infrastructure Technology 11.2.25.0.000 deployments.
- Inventory Hyperion accounts and revoke unnecessary low-privilege access to reduce the pool of usable attacker credentials.
- Restrict network reachability of Hyperion HTTP endpoints to trusted management networks and VPN users only.
Patch Information
Oracle published remediation guidance in the August 2026 Critical Patch Update. Review the Oracle Security Alert and apply the vendor-supplied patches for Oracle Hyperion Infrastructure Technology 11.2.25.0.000. Oracle strongly recommends applying Critical Patch Update fixes without delay.
Workarounds
- Place Hyperion services behind a reverse proxy that enforces strict per-role URL and method allowlists until patching completes.
- Rotate credentials for all Hyperion accounts, enforce strong password policies, and require multi-factor authentication where supported.
- Disable or lock inactive Hyperion accounts to minimize exploitable authenticated entry points.
# Example: restrict Hyperion HTTP endpoints to a management subnet using 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
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
