VULNERABILITY INTELLIGENCE
CVE-2026-51218
CVSS score7.5 HIGH
EPSS probability0.57%
CISA KEVNot currently listed
Published2026-06-29
Last modified2026-07-30
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-122