CVE WatchAug 1, 2026

CVE-2026-15105

A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7_se

CVSS

6.3

Medium

EPSS

0.4%

p32

KEV

—

Exploit Today

0-100

Published: Jul 8, 2026 · Last modified: Aug 1, 2026 · CWE-119 · CWE-787

EPSS · 30d

0.3%EPSS · 30 days0.4%

2026-08-232026-09-20

Technical description

A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7_server.cpp of the component ReadVar Request Handler. This manipulation causes out-of-bounds write. The attack requires access to the local network. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Official references

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