CVE-2026-10763 Overview
CVE-2026-10763 affects Hitachi Energy PROMOD V, a power system planning and analysis application. The software transmits data over unencrypted HTTP instead of HTTPS. The insecure communication path originates from a third-party Digipede server that lacks HTTPS support. An attacker positioned on the network can intercept or manipulate traffic between PROMOD V and the Digipede server. This exposes sensitive planning data and can enable content tampering during transit.
Critical Impact
Network-based attackers can intercept confidential PROMOD V traffic and alter transmitted content because the application communicates over plaintext HTTP.
Affected Products
- Hitachi Energy PROMOD V
- Third-party Digipede server component
- Deployments relying on HTTP-based Digipede communication
Discovery Timeline
- 2026-06-30 - CVE-2026-10763 published to NVD
- 2026-06-30 - Last updated in NVD database
Technical Details for CVE-2026-10763
Vulnerability Analysis
The flaw is an insecure communication issue in PROMOD V. The application relies on a third-party Digipede server that does not support Transport Layer Security (TLS). All requests and responses between PROMOD V and the Digipede server travel over HTTP in cleartext. This falls under the Insecure Communication and Missing Encryption categories. The Common Vulnerability Scoring System (CVSS) 4.0 vector indicates a network-based attack with user interaction and high confidentiality impact. Attackers who observe the network path can read data as it moves between components.
Root Cause
The root cause is the absence of HTTPS support in the Digipede server, which forces PROMOD V to fall back to plaintext HTTP. No TLS session is negotiated, and no certificate validation occurs. As a result, integrity and confidentiality controls that a modern transport layer would provide are missing from the client-server exchange.
Attack Vector
An attacker on the same network segment as a PROMOD V workstation or its Digipede server can passively capture HTTP traffic. An adversary with an active position, such as ARP spoofing or a rogue gateway, can modify responses in transit. Exploitation requires user interaction with the affected workflow, but no authentication or elevated privileges. Consult the Hitachi Energy advisory for vendor technical details.
Detection Methods for CVE-2026-10763
Indicators of Compromise
- Outbound HTTP requests from PROMOD V hosts to the Digipede server on TCP port 80
- Unexpected ARP table changes or duplicate MAC addresses on segments hosting PROMOD V clients
- Unencrypted payloads containing PROMOD V job data in packet captures
Detection Strategies
- Inspect network flows from engineering workstations for cleartext HTTP traffic to Digipede endpoints
- Correlate PROMOD V process activity with plaintext TCP/80 sessions in endpoint telemetry
- Alert on man-in-the-middle indicators such as ARP anomalies and unexpected TLS downgrades within operational technology (OT) segments
Monitoring Recommendations
- Baseline expected network destinations for PROMOD V and flag deviations
- Log full packet headers on segments carrying Digipede traffic for later forensic review
- Monitor for credential or job metadata patterns appearing in unencrypted traffic
How to Mitigate CVE-2026-10763
Immediate Actions Required
- Isolate PROMOD V and its Digipede server on a dedicated, restricted network segment
- Restrict access to the Digipede server through firewall rules that only permit approved PROMOD V clients
- Review the Hitachi Energy advisory and apply vendor guidance
Patch Information
Hitachi Energy has published guidance in advisory 8DBD000250. Because the underlying limitation is the third-party Digipede server's lack of HTTPS support, refer to the vendor advisory for the current remediation status and any updated builds of PROMOD V that alter the communication path.
Workarounds
- Tunnel PROMOD V-to-Digipede traffic through an IPsec or TLS-terminating reverse proxy
- Deploy the Digipede server on a physically or logically isolated network with no untrusted hosts
- Enforce strict switch port security and disable unused ports to reduce man-in-the-middle exposure
- Require multi-factor authentication and privileged access workstations for administrators managing PROMOD V
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
