CVE-2018-14821

Rockwell Automation RSLinx Classic Versions 4.00.01 and prior. This vulnerability may allow a remote, unauthenticated threat actor to intentionally send a malformed CIP packet to Port 44818, causing the RSLinx Classic application to terminate. The user will need to manually restart the software to regain functionality.

• CWE-122
• CWE-119

• https://ics-cert.us-cert.gov/advisories/ICSA-18-263-02Third Party Advisory, US Government Resource
• https://www.tenable.com/security/research/tra-2018-26Exploit, Third Party Advisory
• https://ics-cert.us-cert.gov/advisories/ICSA-18-263-02Third Party Advisory, US Government Resource
• https://www.tenable.com/security/research/tra-2018-26Exploit, Third Party Advisory

Published

Sep 20, 2018

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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