PT-2026-56618 · Davenardella · Snap7

Chuan Wei + 1 · Published 2026-07-08 · Updated 2026-07-08 · CVE-2026-15105

Mitre

CVSS v3.1

6.3

Medium

Base vector

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

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 deserialization. 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.

Exploit

Fix

Deserialization of Untrusted Data

RCE

Weakness Enumeration

CWE-502

CWE-20

Related Identifiers

CVE-2026-15105

Affected Products

Snap7

References · 8

• 🔥❌ https://github.com/user-attachments/files/28681740/poc.zip · Exploit, Deleted
• https://nvd.nist.gov/vuln/detail/CVE-2026-15105 · Security Note
• https://github.com/davenardella/snap7/issues/16 · Note
• https://vuldb.com/submit/851026 · Note
• https://vuldb.com/vuln/376946 · Note
• https://vuldb.com/cve/CVE-2026-15105 · Note
• https://vuldb.com/vuln/376946/cti · Note
• https://github.com/davenardella/snap7 · Note