Ssh-2.0-cisco-1.25 Vulnerability Jun 2026

A: No. It is a version banner. However, it indicates the device is likely missing security patches, making it a prime target for malware or ransomware.

—identifying the exact operating system and software version to find matching exploits. Several critical vulnerabilities have affected Cisco devices running versions associated with this banner over the years: NetCom Learning SSH Terrapin Prefix Truncation Weakness - Cisco Community ssh-2.0-cisco-1.25 vulnerability

The string SSH-2.0-Cisco-1.25 SSH server banner typically seen when connecting to Cisco IOS or IOS-XE devices. This banner itself is a version string, not a specific vulnerability, but its presence indicates the device is running a version of the Cisco SSH implementation that may be susceptible to several known protocol-level and implementation-specific vulnerabilities. Devolutions Forum Key Vulnerabilities Associated with Cisco SSH including its background

Here’s a breakdown of what’s commonly referred to in security research as the fingerprint, including its background, associated vulnerabilities, and how to investigate it properly. including patches and workarounds

For more information on the SSH-2.0-Cisco-1.25 vulnerability, including patches and workarounds, please refer to: