CVE-2026-90572A vulnerability was determined in davenardella snap7 up to 1.4.3. The affected element is the function TSnap7MicroClient:
pUpload of the file src/core/s7_micro_client.cpp. Executing a manipulation of the argument DataLen can lead to memory corruption. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.