Directory traversal vulnerability in the Runtime Toolkit in CODESYS Runtime System 2.3.x and 2.4.x allows remote attackers to read, overwrite, or create arbitrary files via a .. (dot dot) in a request to the TCP listener service.
The Runtime Toolkit in CODESYS Runtime System 2.3.x and 2.4.x does not require authentication, which allows remote attackers to (1) execute commands via the command-line interface in the TCP listener service or (2) transfer files via requests to the TCP listener service.
Runtime Toolkit before 2.4.7.48 in 3S-Smart CODESYS before 2.3.9.48 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted request.
An exploitable code execution vulnerability exists in the PLCTask functionality of 3S-Smart Software Solutions GmbH CODESYS Runtime 3.5.14.30. A specially crafted network request can cause remote code execution. An attacker can send a malicious packet to trigger this vulnerability.