CVE-2026-51218
Snap7 Heap Buffer Overflow
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.
INFO
Published Date :
June 29, 2026, midnight
Last Modified :
June 29, 2026, 10:07 p.m.
Remotely Exploit :
No
Source :
mitre
Affected Products
The following products are affected by CVE-2026-51218
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update snap7 to the latest available version.
- Apply vendor patches for snap7.
- Review system logs for signs of exploitation.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-51218 vulnerability anywhere in the article.