CVE-2026-15105 davenardella snap7 ReadVar Request s7_server.cpp PerformFunctionRead out-of-bounds write

A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7server.cpp of the component ReadVar Request Handler. This manipulation causes out-of-bounds write. The attack requires access to the local network. The exploit...

CVE-2026-15105

CVE-2026-15105 affects davenardella snap7 up to 1.4.3. The flaw resides in TS7Worker::PerformFunctionRead (src/core/s7_server.cpp) within the ReadVar Request Handler, causing deserialization. Exploitation requires local-network access and a public exploit has been published. The project was infor...