Ssh20cisco125 Vulnerability

Upgrade to a fixed version of Cisco ISE software (e.g., 3.2P7, 3.3P4, or 3.4) as per the Cisco Security Advisory .

For the purpose of this post, we are focusing on the critical compromise chain that devastated the ISR 1000 and Catalyst 8000 series devices.

nmap --script ssh2-enum-algos -p 22 <cisco-ip> ssh20cisco125 vulnerability

Access information that should be restricted based on their privilege level.

If you manage a Cisco 2500 WLC running an AireOS version older than 8.5.160.0 or 8.8.120.0, upgrade immediately or restrict SSH access to trusted management hosts. Upgrade to a fixed version of Cisco ISE software (e

Analysis of the ssh-20-cisco-125 Vulnerability: A Critical Examination of SSH Weaknesses in Cisco Devices

However, several critical Cisco SSH vulnerabilities were disclosed in 2024 and 2025 that match the likely intent of your query. Below is a report on the most prominent recent Cisco SSH-related security issues. CVE-2025-20309: Static Root Credentials (Critical) maximum severity If you manage a Cisco 2500 WLC running

We recommend prioritizing this update for internet-facing devices.