What’s Vulnerable › Vulnerabilities

CVE-2022-21155: Fernhill SCADA Uncontrolled Resource Consumption

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-04-12 · updated 2026-06-17
• Weakness: CWE-400

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.

Affected products

• Fernhill SCADA Server: through 3.77

References

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

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