Ssh-2.0-cisco-1.25 Vulnerability Info

The string SSH-2.0-Cisco-1.25 is not a specific vulnerability itself, but rather the version banner

Note: Cisco-1.25 alone does not confirm any specific CVE. It must be cross-referenced with show version output. ssh-2.0-cisco-1.25 vulnerability

In the realm of network security, the SSH (Secure Shell) protocol is the backbone of remote administration. It is the secure lock on the door to your network infrastructure. However, a simple banner string—specifically ssh-2.0-cisco-1.25—often serves as a flashing neon sign to attackers, indicating that the lock might be broken, outdated, or fundamentally weak. The string SSH-2

B. Permanent fix – Upgrade IOS

Upgrade to a fixed IOS version:

5. False positives & notes

• Some newer Cisco devices (e.g., IOS-XE, NX-OS) may also show Cisco-1.25 but are not vulnerable – the banner string was reused in some later builds. Always check the actual IOS version.
• Tools like Nessus or OpenVAS might flag SSH-2.0-Cisco-1.25 as “potential vulnerability” – verify manually.