CVE-2026-61206 Overview
CVE-2026-61206 is a critical vulnerability in the Security component of Oracle Hyperion Calculation Manager, part of the Oracle Hyperion product family. The affected supported version is 11.2.25.0.000. A low-privileged attacker with network access via HTTP can exploit this flaw with low attack complexity and no user interaction. Successful exploitation results in full takeover of Oracle Hyperion Calculation Manager. Because the vulnerability carries a scope change, attacks may significantly impact additional Oracle products beyond the vulnerable component itself. Oracle disclosed the issue in its August 2026 Critical Patch Update.
Critical Impact
Authenticated attackers with low privileges can compromise Oracle Hyperion Calculation Manager over the network, with confirmed impact spreading to additional Oracle products through a scope change.
Affected Products
- Oracle Hyperion Calculation Manager 11.2.25.0.000
- Oracle Hyperion (Security component)
- Adjacent Oracle products reachable through the scope change
Discovery Timeline
- 2026-08-18 - CVE-2026-61206 published to NVD
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-61206
Vulnerability Analysis
The flaw resides in the Security component of Oracle Hyperion Calculation Manager. An attacker authenticated with any low-privileged application account can reach the vulnerable code path over HTTP. Oracle classifies the issue as easily exploitable, meaning no specialized conditions are required beyond network reachability and valid low-tier credentials.
The scope change is the defining characteristic. Exploitation of the Calculation Manager component grants the attacker the ability to affect resources managed by other Oracle Hyperion components. This lateral impact converts a component-level compromise into a broader environment compromise across financial planning and reporting workloads.
Successful exploitation yields high confidentiality, integrity, and availability impact. The end state is full takeover of Oracle Hyperion Calculation Manager, including the ability to manipulate calculation logic, exfiltrate financial modeling data, and disrupt planning cycles.
Root Cause
Oracle has not published root-cause detail beyond identifying the affected component as Security. The advisory language and scope change indicate a defect in the authorization or trust boundary enforcement between Calculation Manager and adjoining Oracle Hyperion services. Refer to the Oracle Security Alert for the authoritative advisory.
Attack Vector
The attack vector is network-based over HTTP. The attacker requires low privileges, no user interaction, and low attack complexity. Exploitation typically involves sending crafted authenticated HTTP requests to a Calculation Manager endpoint that fails to enforce authorization consistently, allowing the attacker to escalate privileges or invoke restricted functionality across the trust boundary.
No public proof-of-concept, CISA KEV listing, or evidence of in-the-wild exploitation is currently available. The EPSS score is 0.479%.
Detection Methods for CVE-2026-61206
Indicators of Compromise
- Anomalous HTTP requests to Oracle Hyperion Calculation Manager endpoints originating from low-privileged accounts performing administrative actions
- Unexpected modifications to calculation rules, business rules, or security assignments within the Calculation Manager repository
- Cross-component activity where a Calculation Manager session initiates operations against other Oracle Hyperion services outside its normal scope
Detection Strategies
- Enable and centralize Oracle Hyperion audit logs, then baseline normal user-to-endpoint mappings to surface deviations
- Correlate authentication events for low-privileged Hyperion accounts against subsequent privileged operations across Hyperion components
- Monitor web application firewall and reverse proxy logs for unusual request patterns to Calculation Manager URIs
Monitoring Recommendations
- Forward Oracle Hyperion, WebLogic, and HTTP server logs to a centralized analytics platform for correlation
- Alert on privilege escalation patterns, particularly account activity that crosses the Calculation Manager to peer-component boundary
- Track file integrity on Calculation Manager configuration and rule artifacts to detect unauthorized changes
How to Mitigate CVE-2026-61206
Immediate Actions Required
- Apply the Oracle Critical Patch Update from the August 2026 advisory to all Oracle Hyperion Calculation Manager instances running 11.2.25.0.000
- Restrict network access to Calculation Manager HTTP endpoints to trusted administrative networks only
- Audit and reduce the population of low-privileged Hyperion accounts, rotating credentials for any account with residual access
Patch Information
Oracle addressed CVE-2026-61206 in the August 2026 Critical Patch Update. Full patch guidance, affected version matrices, and download instructions are available in the Oracle Security Alert. Organizations should validate patch application in a staging environment before production rollout to confirm compatibility with existing Hyperion integrations.
Workarounds
- Place Calculation Manager behind a reverse proxy or WAF that enforces strict authentication and rate limits on sensitive endpoints
- Segment Oracle Hyperion components at the network layer to limit lateral impact from the scope change
- Disable or restrict non-essential Calculation Manager features and integrations until the patch is applied
# Example: restrict HTTP access to Calculation Manager to a trusted admin subnet
# (adapt to your firewall or reverse proxy syntax)
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.
