Ssh20cisco125 Vulnerability

The string "ssh20cisco125" refers to an SSH banner—a standard identification string sent by a Cisco device during the initial handshake of an SSH connection. It specifically denotes the protocol version ( ) and the Cisco-specific SSH implementation version ( Cisco-1.25

Cheers

Step 2: Test Externally with Nmap

From an external Linux host:

We recommend prioritizing this update for internet-facing devices.

Mitigation and Fix

Option 3: Customer-Facing (Advisory Notice)

Subject: Security Advisory – SSH20Cisco125 Vulnerability in Cisco Devices

Then use a tool like ssh-audit:

Historic Cisco-related SSH CVEs have fallen into these categories (e.g., device software mistakes in IOS/ASA/IM/Catalyst platforms, or third-party SSH libraries bundled into appliances).