CVE-2026-15105: snap7 1.4.0, 1.4.1, 1.4.2, 1.4.3

CVE-2026-15105. CVSS 3.1 base score 6.3 (MEDIUM, Vendor/CNA). EPSS 0.00377 (percentile 0.3057), scored 24-Oct-2026.

Affected technology

snap7 · 1.4.0, 1.4.1, 1.4.2, 1.4.3
davenardella

Description’s affected range: up to 1.4.3

Component: ReadVar Request Handler
Function: TS7Worker::PerformFunctionRead
File: src/core/s7_server.cpp

Attack conditions (VulDB, CVSS 4.0): Adjacent network · No privileges required · No user interaction required

What an attacker can do

VulDB’s CVSS 4.0 assessment (base score 2.1/10) rates confidentiality, integrity and availability impact as low. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 25-Oct-2026 19:52 UTC

CWE: CWE-119, CWE-787
CCR priority: 25.3 /100 (P4)
CVSS 3.1: 6.3 /10 · CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L · Vendor/CNA
EPSS: 0.00377 · percentile 0.31447 · 2026-10-25
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-25 19:52:47.952465+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-25 19:51:06.643138+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-15105.html