Vulnerability Details CVE-2020-22552
The Snap7 server component in version 1.4.1, when an attacker sends a crafted packet with COTP protocol the last-data-unit flag set to No and S7 writes a var function, the Snap7 server will be crashed.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 37.2%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
Products affected by CVE-2020-22552
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cpe:2.3:a:snap7_project:snap7:1.4.1