CVE-2026-62578 Overview
CVE-2026-62578 is an information disclosure vulnerability in Oracle Hyperion Calculation Manager, a component of the Oracle Hyperion product family. The flaw resides in the Security component and affects supported version 11.2.25.0.000. An unauthenticated attacker with access to the physical communication segment attached to the hardware running the product can compromise the application. Successful exploitation grants unauthorized access to critical data or complete access to all data accessible through Oracle Hyperion Calculation Manager. The vulnerability requires adjacent network access rather than direct internet exposure, limiting the pool of potential attackers to those already positioned within the same broadcast domain.
Critical Impact
Unauthenticated adjacent-network attackers can obtain complete read access to data managed by Oracle Hyperion Calculation Manager, exposing sensitive financial planning and consolidation information.
Affected Products
- Oracle Hyperion Calculation Manager 11.2.25.0.000
- Oracle Hyperion (Security component)
- Deployments accessible from adjacent network segments
Discovery Timeline
- 2026-08-18 - CVE-2026-62578 published to NVD
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-62578
Vulnerability Analysis
The vulnerability is classified as an information disclosure issue affecting the Security component of Oracle Hyperion Calculation Manager. The confidentiality impact is rated High while integrity and availability are not impacted, indicating the flaw enables data exposure without permitting modification or service disruption. Exploitation requires no authentication and no user interaction, which lowers the barrier for attackers who have established a foothold on an adjacent network. The EPSS score of 0.182% indicates a low probability of exploitation in the immediate term. Oracle has not published detailed technical information about the underlying weakness beyond the security alert.
Root Cause
The root cause resides in the Security component of Oracle Hyperion Calculation Manager. Oracle's advisory does not enumerate a specific CWE, but the impact profile is consistent with weaknesses that expose sensitive data over network protocols without adequate authentication or transport protections. The vulnerability is easily exploitable, suggesting a low-complexity path from adjacent network access to data disclosure.
Attack Vector
An attacker must have access to the physical communication segment attached to the hardware where Oracle Hyperion Calculation Manager executes. This translates to positioning on the same VLAN, subnet, or broadcast domain as the target server. Once positioned, the attacker sends crafted requests against exposed services without needing valid credentials. The attack does not require user interaction and does not cross a scope boundary. Refer to the Oracle Security Alert for vendor-supplied technical context.
Detection Methods for CVE-2026-62578
Indicators of Compromise
- Unexpected authentication or session activity against Hyperion Calculation Manager services from hosts on adjacent subnets
- Anomalous volumes of read requests or data export operations from the Calculation Manager application
- Connections to Hyperion service ports from workstations that do not normally interact with financial planning infrastructure
Detection Strategies
- Baseline normal client populations for Hyperion Calculation Manager and alert on new source hosts within the same broadcast domain
- Enable verbose access logging on the Hyperion application server and forward logs to a centralized analytics platform
- Correlate Hyperion access patterns with identity telemetry to identify unauthenticated or anomalous session establishment
Monitoring Recommendations
- Monitor Layer 2 segments hosting Hyperion servers for unauthorized devices using network access control tooling
- Track outbound data volumes from Calculation Manager hosts to detect bulk information disclosure
- Alert on service restarts, configuration changes, and privileged operations on the Hyperion application tier
How to Mitigate CVE-2026-62578
Immediate Actions Required
- Apply the fixes referenced in the Oracle Security Alert for Hyperion Calculation Manager 11.2.25.0.000
- Restrict network access to Hyperion Calculation Manager to a dedicated management VLAN and authenticated administrative hosts
- Audit the broadcast domain containing Hyperion servers and remove unnecessary systems and user workstations
Patch Information
Oracle addressed CVE-2026-62578 in its August 2026 Critical Patch Update cycle. Administrators should consult the Oracle Security Alert for the specific patch bundle applicable to Oracle Hyperion Calculation Manager 11.2.25.0.000 and apply it following Oracle's documented upgrade procedures.
Workarounds
- Segment Hyperion infrastructure onto an isolated network zone with strict ingress and egress controls
- Enforce 802.1X or equivalent port-based network access control on switches serving Hyperion hosts
- Deploy host-based firewalls on Hyperion servers to restrict inbound connections to known application clients
- Increase monitoring on the Hyperion tier until patches can be applied during a scheduled maintenance window
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
