CVE-2017-6028

CriticalCVSS 9.8/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-522

Affected software

No affected versions have been published.

Timeline

Published
Jun 30, 2017
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2017-6028: Critical severity, CVSS 9.8 | Vulnix