Fernhill SCADA Uncontrolled Resource Consumption

7.5 CVSS

Vulnerability Description

A specially crafted packet sent to the Fernhill SCADA Server Version 3.77 and earlier may cause an exception, causing the server process (FHSvrService.exe) to exit.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

This vulnerability was found independently by ExCraft and Fernhill Software.

References

https://www.cisa.gov/uscert/ics/advisories/icsa-22-006-02

Affected Vendor

Fernhill

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Affected Software

SCADA Server

Vulnerable Versions:

unspecified

Timeline

Official Publish: April 12th, 2022

Last Modified: April 16th, 2025

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-400

MITRE ATT&CK TTPs

T1499 Endpoint Denial of Service

Impact

T1498 Network Denial of Service