CVE-2026-51218: Heap-based Buffer Overflow

A heap buffer overflow in the TS7Worker::PerformFunctionWrite function /core/s7server.cpp of snap7 v1.4.3 allows attackers to cause a Denial of Service DoS via a crafted packet...

CVE-2026-51218

The software snap7 version 1.4.3 is vulnerable to a heap buffer overflow in the TS7Worker::PerformFunctionWrite() function located in /core/s7_server.cpp. An attacker can exploit this by sending a crafted packet to trigger a Denial of Service (DoS) . The vulnerability occurs when the program writ...