CVE-2026-62598 Overview
CVE-2026-62598 is a high-severity vulnerability in the Security component of Oracle Hyperion Calculation Manager. The flaw affects supported version 11.2.25.0.000 and enables a low-privileged attacker with network access via SFTP to compromise the application. Exploitation is difficult, but a successful attack produces a scope change, meaning impact extends to additional products beyond Calculation Manager. Consequences include unauthorized creation, deletion, or modification of critical data, and unauthorized read access to all data accessible by Calculation Manager. Oracle addressed the issue in the August 2026 Critical Patch Update. See the Oracle Security Alert for the complete advisory.
Critical Impact
Authenticated attackers can read and modify all data accessible by Oracle Hyperion Calculation Manager, with impact extending to adjacent products through a scope change.
Affected Products
- Oracle Hyperion Calculation Manager 11.2.25.0.000
- Oracle Hyperion product family (Security component)
- Environments exposing SFTP access to Hyperion Calculation Manager
Discovery Timeline
- 2026-08-18 - CVE-2026-62598 published to NVD
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-62598
Vulnerability Analysis
The vulnerability resides in the Security component of Oracle Hyperion Calculation Manager. An attacker must hold low-level privileges and reach the target over the network using SFTP. Successful exploitation grants read and write access to all data the application can reach. The scope change indicates the compromised component operates with authority that crosses trust boundaries, allowing impact against additional Oracle Hyperion products. Oracle classifies the exploitation as difficult, reflecting conditions outside the attacker's direct control that must align for a successful attack.
Root Cause
Oracle has not published detailed root-cause information for CVE-2026-62598. The advisory identifies the affected surface as the Security component reached through SFTP. The scope change in the CVSS vector indicates the vulnerable component can influence resources managed by other Hyperion components, consistent with a broken authorization or trust boundary flaw in the security layer. Refer to the Oracle Security Alert for vendor-supplied technical context.
Attack Vector
Exploitation requires an authenticated account with low privileges and network reachability to the SFTP interface of the Hyperion deployment. The attacker interacts with the Security component through this channel to trigger the flaw. No user interaction is required. Because the scope changes on successful exploitation, the attacker can influence data belonging to systems beyond Calculation Manager itself, expanding the blast radius across the Hyperion stack.
No public proof-of-concept code is available for CVE-2026-62598, and no exploitation in the wild has been reported. The Exploit Prediction Scoring System places this CVE in a low near-term exploitation probability range at the time of publication.
Detection Methods for CVE-2026-62598
Indicators of Compromise
- Unexpected SFTP authentication events from low-privileged Hyperion accounts against Calculation Manager hosts.
- Unauthorized modification, creation, or deletion of Calculation Manager artifacts, rules, or business rules.
- Cross-product data changes in Oracle Hyperion components without a corresponding change ticket or workflow.
Detection Strategies
- Correlate SFTP session logs on Hyperion servers with application-level audit events in Calculation Manager to spot mismatched activity.
- Alert on Security component operations performed by accounts that normally do not administer Calculation Manager.
- Baseline expected SFTP source addresses and flag connections originating outside sanctioned management networks.
Monitoring Recommendations
- Forward Oracle Hyperion application, SFTP, and OS audit logs to a central SIEM for cross-source correlation.
- Monitor for privilege changes, data export operations, and rule modifications within Calculation Manager.
- Track file integrity on Calculation Manager configuration directories and downstream Hyperion data stores.
How to Mitigate CVE-2026-62598
Immediate Actions Required
- Apply the patches supplied in the Oracle August 2026 Critical Patch Update to all Hyperion Calculation Manager 11.2.25.0.000 deployments.
- Inventory all Hyperion instances exposing SFTP and confirm they are covered by the patch cycle.
- Rotate credentials for low-privileged Hyperion accounts that could be leveraged in an SFTP-based attack.
Patch Information
Oracle published fixes for CVE-2026-62598 in the August 2026 Critical Patch Update. Full details, patch identifiers, and download instructions are documented in the Oracle Security Alert. Administrators should follow Oracle's supported upgrade path for Hyperion 11.2.x and validate application functionality in a staging environment before production rollout.
Workarounds
- Restrict network access to the Hyperion SFTP service using firewall rules or network segmentation so only trusted administrative subnets can connect.
- Enforce least privilege on Hyperion accounts and remove SFTP entitlements from users who do not require them.
- Enable strong authentication and session logging on the SFTP endpoint to reduce the window for authenticated abuse until patches are applied.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
