CVE-2026-78313 Overview
CVE-2026-78313 is an improper access control vulnerability [CWE-284] affecting Delta Electronics DIAEnergie, an industrial energy management platform. The flaw affects all DIAEnergie versions prior to 1.11.00.022. An authenticated remote attacker with low privileges can abuse the weakness to access data outside their authorization scope. The issue requires network access but no user interaction, making it exploitable over standard HTTP sessions against exposed DIAEnergie instances.
Critical Impact
An authenticated attacker with low-level credentials can read sensitive information managed by DIAEnergie, undermining the confidentiality of energy monitoring data and configuration details.
Affected Products
- Delta Electronics DIAEnergie versions before 1.11.00.022
- Industrial energy management deployments exposing the DIAEnergie web interface
- Operational technology (OT) environments integrating DIAEnergie for energy monitoring
Discovery Timeline
- 2026-09-24 - CVE CVE-2026-78313 published to NVD
- 2026-09-24 - Last updated in NVD database
Technical Details for CVE-2026-78313
Vulnerability Analysis
The vulnerability resides in DIAEnergie's access control enforcement logic. The application fails to properly validate whether an authenticated user is permitted to access requested resources or perform requested operations. An attacker holding valid low-privilege credentials can issue crafted requests to retrieve information intended for higher-privileged roles.
DIAEnergie is widely deployed in manufacturing and industrial facilities for monitoring and managing energy consumption. Unauthorized disclosure can expose production schedules, equipment utilization patterns, and configuration data useful for follow-on attacks against industrial control systems.
Exploitation does not require social engineering or user interaction. The attacker only needs network reachability to the DIAEnergie server and a valid account at any privilege tier.
Root Cause
The root cause is missing or incomplete authorization checks on protected endpoints. The application relies on authentication to establish identity but does not consistently enforce role or resource-level permissions before returning data. This pattern aligns with CWE-284 (Improper Access Control) and is often referred to as broken access control.
Attack Vector
The attack vector is network-based. An attacker authenticates to DIAEnergie using any valid account, then issues HTTP requests to endpoints or resource identifiers associated with other users or privilege scopes. Because the server does not validate authorization, it returns the requested data. Refer to the Delta Security Advisory for CVE-2026-78308 through CVE-2026-78313 for vendor-specific technical details.
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Stop Identity AttacksDetection Methods for CVE-2026-78313
Indicators of Compromise
- Unexpected HTTP requests from low-privilege DIAEnergie accounts to administrative or cross-tenant resource paths
- Enumeration patterns against numeric resource identifiers in DIAEnergie URLs
- Access log entries showing successful responses for resources outside a user's normal scope
Detection Strategies
- Review DIAEnergie application logs for authenticated sessions accessing resources inconsistent with their assigned role
- Correlate low-privilege account activity with volumes of data retrieval that exceed baseline behavior
- Monitor web server access logs for repeated sequential access to parameterized endpoints indicating enumeration
Monitoring Recommendations
- Forward DIAEnergie web and application logs to a centralized SIEM for correlation and retention
- Establish behavioral baselines per account role and alert on deviations in resource access patterns
- Alert on authentication from unexpected network locations or outside maintenance windows
How to Mitigate CVE-2026-78313
Immediate Actions Required
- Upgrade DIAEnergie to version 1.11.00.022 or later as published by Delta Electronics
- Audit all DIAEnergie user accounts and remove unused or default low-privilege credentials
- Restrict network access to the DIAEnergie management interface to trusted operator subnets
Patch Information
Delta Electronics has released DIAEnergie version 1.11.00.022, which addresses CVE-2026-78313 along with related issues CVE-2026-78308 through CVE-2026-78312. Apply the vendor-supplied update as documented in the Delta Electronics PCSA-2026-00014 advisory.
Workarounds
- Place DIAEnergie behind a reverse proxy or VPN gateway that enforces additional authentication and network segmentation
- Enforce strong, unique passwords and multi-factor authentication on all DIAEnergie accounts where supported
- Isolate DIAEnergie servers from general corporate networks and limit access to engineering workstations
# Example firewall restriction limiting DIAEnergie access to a trusted 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
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
