CVE-2026-51218

MEDIUM CVSS 6.5 View on NVD ↗

Description

A heap buffer overflow in the TS7Worker::PerformFunctionWrite() function (/core/s7_server.cpp) of snap7 v1.4.3 allows attackers to cause a Denial of Service (DoS) via a crafted packet.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

https://github.com/davenardella/snap7
https://github.com/davenardella/snap7/issues/14
https://github.com/davenardella/snap7/issues/14

Published: Jun 29, 2026 23:16 UTC Modified: Jun 30, 2026 14:22 UTC