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Hitachi ABB Power Grids eSOMS Telerik

Act Now9.8ICS-CERT ICSA-21-077-03Mar 18, 2021
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

Hitachi ABB Power Grids eSOMS versions below 6.3 contain multiple critical vulnerabilities in the embedded Telerik software component. These flaws include improper file path handling (CWE-22), unsafe deserialization (CWE-502), inadequate input validation (CWE-20), weak cryptography (CWE-326), and insufficient credential protection (CWE-522). Successful exploitation allows unauthenticated remote attackers to upload malicious files, execute arbitrary code, or access sensitive information on the server. The vulnerabilities are actively exploited in the wild.

What this means
What could happen
An attacker could upload malicious files, access sensitive information, or execute arbitrary code on the eSOMS server, potentially allowing them to manipulate grid operations, steal configuration data, or disrupt power delivery systems.
Who's at risk
This affects electric utilities and grid operators using Hitachi ABB Power Grids eSOMS (Energy Supervision and Operational Management System) for power grid monitoring and control. Any organization with versions below 6.3 is at immediate risk, particularly those with eSOMS servers accessible from untrusted networks.
How it could be exploited
An unauthenticated attacker on the network can send a specially crafted request to the eSOMS Telerik component to exploit file upload, deserialization, or input validation flaws. This allows direct code execution on the server or file system access without needing credentials.
Prerequisites
  • Network access to the eSOMS server (typically port 80/443)
  • No authentication required
  • eSOMS version below 6.3
remotely exploitableno authentication requiredlow complexityactively exploited (KEV)high EPSS score (93.9%)affects critical energy infrastructurearbitrary code execution capability
Exploitability
Actively exploited — confirmed by CISA KEV
Affected products (1)
ProductAffected VersionsFix Status
eSOMS: all< 6.3 of telerik software6.3 or later
Remediation & Mitigation
0/4
Do now
0/2
HOTFIXUpdate eSOMS to version 6.3 or later as soon as possible
HARDENINGIsolate eSOMS servers from direct internet access and restrict network access using firewall rules to only authorized management and monitoring traffic
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HARDENINGEnsure eSOMS servers are not used for web browsing, email, or file sharing to limit malware exposure vectors
Long-term hardening
0/1
HARDENINGImplement network segmentation to separate the grid management network from corporate IT and external networks
View full CISA ICS-CERT advisory
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Hitachi ABB Power Grids eSOMS Telerik | CVSS 9.8 - OTPulse