CVE-2015-0775: The banner (aka MOTD) implementation in Cisco NX-OS 4.1(2)E1(1f) on Nexus 4000 devices, 5.2(1)SV3(2.1) on N...

Security readout for executives and security teams

This flaw can let a remote actor reset the login process on certain Cisco Nexus and MDS switches during Telnet setup. The documented impact is denial of service to login, not data theft or code execution. Business urgency depends on whether Telnet management is enabled or reachable. Exposure is most likely where affected Cisco NX-OS Nexus or MDS management interfaces allow Telnet access from untrusted or broad networks. SSH-only environments, filtered management planes, and devices not running the listed versions are less likely exposed. Treat this as a management-plane availability risk, especially for legacy Cisco switching environments. Prioritize exposed Telnet management interfaces first; urgency is lower where Telnet is disabled or tightly restricted. Mitigation focus: Check Cisco advisory and bug IDs for fixed NX-OS releases.; Disable Telnet management where operationally possible.; Restrict management access to trusted administrative networks..

Prepared

Jun 13, 2026, 22:39 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.