CVE-2022-21155

Fernhill SCADA Uncontrolled Resource Consumption

Published Apr 12, 2022 CVSS 3.1 · 7.5 High EPSS 1.1% KEV · Not listed
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.

Remediation

Vendor Solution

Fernhill recommends users upgrade to Version 3.78 or later: https://www.fernhillsoftware.com/download.php For more information about this issue and how to apply the upgrade, please contact Fernhill online (https://www.fernhillsoftware.com/about-contact.php) or via email (support@fernhillsoftware.com).

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2022-26400 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
icscert
Published
Updated
Apr 16, 2025, 4:30 PM
Reserved
Dec 21, 2021, 12:00 AM
Status
Modified
Published
Apr 12, 2022, 5:15 PM
Modified
Jun 17, 2026, 4:25 AM