If you’re doing or red teaming :
This signature breaks down into three key functional components:
Understanding the "SSH-2.0-Cisco-1.25" Vulnerability: Risks, Identification, and Mitigation ssh-2.0-cisco-1.25 vulnerability
: Represents the vendor-specific software implementation version.
This article provides a deep dive into the risks associated with devices reporting SSH-2.0-Cisco-1.25 , specifically focusing on the most relevant vulnerabilities, and outlines necessary mitigation steps. 1. What is the SSH-2.0-Cisco-1.25 Identifier? If you’re doing or red teaming : This
Scanning tools like Shodan and Censys have identified over globally of the "SSH-2.0-Cisco-1.25" banner. This broad exposure makes these devices prime targets for automated exploit scripts. Remediation and Best Practices
On Cisco ASA devices that reported similar version strings (often overlapping with 1.25 ), there was a vulnerability where processing specific SSH packets would not free memory correctly. Over days or weeks, the device would exhaust memory and stop passing traffic. This required a reboot to resolve. What is the SSH-2
For older Cisco environments, indicates that the device mandates the secure SSH version 2.0 protocol while operating on an older internal Cisco SSH code branch ( Cisco-1.25 ). Security scanning engines parse this plaintext banner during passive reconnaissance to match the asset against historically documented vulnerabilities. Associated Historical Vulnerabilities