Vulnerability Details CVE-2021-34593
In CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56 unauthenticated crafted invalid requests may result in several denial-of-service conditions. Running PLC programs may be stopped, memory may be leaked, or further communication clients may be blocked from accessing the PLC.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.008
EPSS Ranking 72.2%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- http://packetstormsecurity.com/files/164716/CODESYS-2.4.7.0-Denial-Of-Service.html
- http://packetstormsecurity.com/files/165874/WAGO-750-8xxx-PLC-Denial-Of-Service-User-Enumeration.html
- http://seclists.org/fulldisclosure/2021/Oct/64
- https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16877&token=8faab0fc1e069f4edfca5d5aba8146139f67a175&download=
- http://packetstormsecurity.com/files/164716/CODESYS-2.4.7.0-Denial-Of-Service.html
- http://packetstormsecurity.com/files/165874/WAGO-750-8xxx-PLC-Denial-Of-Service-User-Enumeration.html
- http://seclists.org/fulldisclosure/2021/Oct/64
- https://customers.codesys.com/index.php?eID=dumpFile&t=f&f=16877&token=8faab0fc1e069f4edfca5d5aba8146139f67a175&download=
Products affected by CVE-2021-34593
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cpe:2.3:a:codesys:plcwinnt:-
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cpe:2.3:a:codesys:plcwinnt:2.4.7.54
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cpe:2.3:a:codesys:runtime_toolkit:-
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cpe:2.3:a:codesys:runtime_toolkit:2.4.7.54