CVE-2017-6028

CRITICAL

Schneider-electric Modicon M241 Firmware < 4.0.3.20 - Insufficiently Protected Credentials

Title source: rule

Description

An Insufficiently Protected Credentials issue was discovered in Schneider Electric Modicon PLCs Modicon M241, all firmware versions, and Modicon M251, all firmware versions. Log-in credentials are sent over the network with Base64 encoding leaving them susceptible to sniffing. Sniffed credentials could then be used to log into the web application.

References (2)

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/97254

[Third Party Advisory, US Government Resource] https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02

Scores

CVSS v3 9.8

EPSS 0.0032

EPSS Percentile 54.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-522

Status draft

Affected Products (2)

schneider-electric/modicon_m241_firmware < 4.0.3.20

schneider-electric/modicon_m251_firmware < 4.0.3.20

Timeline

Published Jun 30, 2017

Tracked Since Feb 18, 2026