Ssh-2.0-cisco-1.25 | Vulnerability

Devices exposing this banner generally span several generations of Cisco software, making them vulnerable to several critical flaws depending on the exact implementation.

Beyond direct security vulnerabilities, the SSH-2.0-Cisco-1.25 server is notorious for several implementation quirks that primarily cause operational headaches and, in some cases, could degrade the security posture of an SSH session.

Given the long history and varied nature of SSH issues on Cisco devices, a layered and proactive security strategy is essential. Here are the key steps to secure your network infrastructure. ssh-2.0-cisco-1.25 vulnerability

: The device is utilizing version 1.25 of Cisco’s internal code package for handling secure shell connections.

A critical vulnerability in Cisco NX-OS Software allowed remote authenticated users to . The flaw, tracked as Bug IDs CSCum35502 , CSCuw78669 , CSCuw79754 , and CSCux88492 , exists due to improper processing of parameters during an SSH connection negotiation . Here are the key steps to secure your network infrastructure

Do not rely solely on the Cisco-1.25 string. Determine the precise Cisco IOS/IOS XE version by running show version via the Command Line Interface (CLI). Use the official Cisco Software Checker tool to paste your OS string and find the exact "First Fixed" release to patch against. Step 2: Restrict SSH Access via Control Plane ACLs

Rosa followed these concrete steps:

The identification of Cisco-1.25 suggests the device is utilizing an older SSH implementation library. Below are the primary vulnerabilities associated with this specific banner.

Here is a comprehensive breakdown of what this banner means, the risks it presents, and how to secure your network. What is the SSH-2.0-Cisco-1.25 Banner? The flaw, tracked as Bug IDs CSCum35502 ,

SSH-2.0-Cisco-1.25 is not a CVE by itself — it’s a identifying a Cisco IOS or IOS-XE device running an SSH server version derived from old/embedded code. It’s often flagged in scans because: