CVE-2026-87195: Oracle Hyperion Auth Bypass Vulnerability

CVE-2026-87195 Overview

CVE-2026-87195 affects the Security component of Oracle Hyperion Financial Management version 11.2.26.0.000. An unauthenticated attacker with network access via Transport Layer Security (TLS) can compromise the application. Successful exploitation grants unauthorized creation, deletion, or modification of critical data, along with full read access to all data accessible by Oracle Hyperion Financial Management. Oracle documents the flaw as difficult to exploit, but the impact scope spans both confidentiality and integrity across the entire application. Enterprises using Hyperion for consolidated financial reporting face direct exposure to unauthorized data tampering and disclosure.

Critical Impact
Unauthenticated network-based attackers can read and modify all data accessible to Oracle Hyperion Financial Management, threatening the integrity of consolidated financial reporting.

Affected Products

Oracle Hyperion Financial Management 11.2.26.0.000
Oracle Hyperion product family (Security component)
Enterprise Performance Management deployments running the affected Hyperion release

Discovery Timeline

2026-09-15 - CVE-2026-87195 published to the National Vulnerability Database
2026-09-16 - Last updated in NVD database
September 2026 - Addressed in the Oracle Security Alert

Technical Details for CVE-2026-87195

Vulnerability Analysis

The vulnerability resides in the Security component of Oracle Hyperion Financial Management. An attacker interacts with the exposed TLS interface without any prior authentication or user interaction. Oracle rates the attack complexity as high, indicating that exploitation requires specific conditions outside the attacker's direct control, such as timing or configuration state.

Once those conditions align, the attacker gains unauthorized read access to all application data and can create, delete, or modify records. Availability of the service is not affected, but data integrity guarantees for financial consolidation, adjustments, and reporting are broken. Because Hyperion Financial Management centralizes ledger consolidation data, integrity loss can propagate into downstream reporting and audit workflows.

The Exploit Prediction Scoring System (EPSS) currently estimates a 0.318% probability of exploitation in the next 30 days, placing this issue in the 24th percentile of tracked vulnerabilities.

Root Cause

Oracle has not disclosed the underlying weakness class. The advisory attributes the issue to the Security component, which handles authentication and authorization enforcement within Hyperion Financial Management. The behavior described — unauthenticated attackers gaining data read and write access — is consistent with a broken access control or authorization bypass condition in that component.

Attack Vector

Exploitation occurs over the network through the TLS-protected interface exposed by Hyperion Financial Management. No credentials, tokens, or user interaction are required. The scope remains unchanged, meaning the attacker operates within the security authority of the vulnerable application rather than pivoting into adjacent systems. Refer to the Oracle Security Alert for vendor-provided technical detail.

No public proof-of-concept exploit code has been observed for CVE-2026-87195 at the time of publication.

Detection Methods for CVE-2026-87195

Indicators of Compromise

Unexpected creation, modification, or deletion of Hyperion Financial Management entities, dimensions, or journal entries outside of scheduled change windows
Anonymous or unauthenticated sessions recorded against the Security component in Hyperion audit logs
Anomalous TLS connections to the Hyperion application server from untrusted source networks

Detection Strategies

Correlate Hyperion application and Security component logs with identity provider logs to detect data changes that lack a corresponding authenticated session
Baseline normal administrative activity on Hyperion consolidation data and alert on deviations, particularly bulk read or modification operations
Alert on any connections to the Hyperion TLS listener originating from segments that should not have direct access to the application tier

Monitoring Recommendations

Forward Hyperion Financial Management audit trails, IIS or web server logs, and database audit logs into a centralized security data lake for correlation
Monitor for privilege model changes, group membership changes, and metadata modifications within the Security component
Track outbound data volume from the Hyperion application server to detect bulk exfiltration attempts

How to Mitigate CVE-2026-87195

Immediate Actions Required

Apply the fix referenced in the Oracle Security Alert covering CVE-2026-87195 as soon as change control allows
Inventory all Oracle Hyperion Financial Management deployments and confirm which run version 11.2.26.0.000
Restrict network reachability to the Hyperion TLS interface to trusted administrative and application segments only
Review Hyperion audit logs since the vulnerable version was deployed for signs of unauthorized data modification

Patch Information

Oracle addresses CVE-2026-87195 through the September 2026 Critical Patch Update / Security Alert cycle. Consult the Oracle Security Alert for the specific patch identifier, prerequisite bundle level, and post-installation validation steps for Oracle Hyperion Financial Management 11.2.26.0.000.

Workarounds

Place the Hyperion application server behind a reverse proxy or web application firewall that enforces authentication before requests reach the Security component
Enforce network access control lists so only known administrative subnets can reach the Hyperion TLS listener
Increase logging verbosity on the Security component to accelerate detection while the patch is being staged

bash

# Example: restrict access to the Hyperion TLS listener using iptables
# Replace 10.10.20.0/24 with your trusted administrative subnet
iptables -A INPUT -p tcp --dport 443 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP