PT-2026-56618

CVE-2026-15105

Published

2026-07-08

Updated

2026-08-01

Description by

CVSS 3.1

6.3

Medium

MetricsAV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions davenardella snap7 versions prior to 1.4.4

Description A flaw in the ReadVar Request Handler component allows for deserialization. The issue resides in the TS7Worker::PerformFunctionRead() function within the src/core/s7 server.cpp file. Exploitation of this issue requires the attacker to have access to the local network.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploitability

Exploit

Impacts

Researchers

Chuan Wei

Vull

Vendors

Affected products

Weakness enumeration

CWE-20: Improper Input Validation

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer