CVE-2017-6028

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.

• CWE-522
• CWE-522

• http://www.securityfocus.com/bid/97254Third Party Advisory, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02Third Party Advisory, US Government Resource
• http://www.securityfocus.com/bid/97254Third Party Advisory, VDB Entry
• https://ics-cert.us-cert.gov/advisories/ICSA-17-089-02Third Party Advisory, US Government Resource

Published

Jun 30, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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