Vulnerabilities are assigned a CVE ID by MITRE. No CVE uses the string ssh-2.0-cisco-1.25. Security tools that flag this banner as a “critical vulnerability” are using outdated or heuristic signatures. The banner only indicates:

The string ssh-2.0-cisco-1.25 is more than just a version number; it is a marker of technical debt. It represents a time capsule of security weaknesses that have long since been solved. In an era of automated ransomware and sophisticated state-sponsored attacks, leaving such a device exposed is an invitation for disaster. Network administrators must prioritize the identification and remediation of these legacy systems to maintain the integrity of their infrastructure.

This banner is frequently associated with a vulnerability where the SSH server does not properly validate the state during the handshake process.

For a penetration tester, seeing ssh-2.0-cisco-1.25 is akin to finding an unlocked window on the ground floor.

Ssh-2.0-cisco-1.25 Vulnerability -

Name: Edo sushi Comment: Wonderful Date: Sat 23 August, 2025, 11:20 am

Name: Fdfhhgg Comment: Good Date: Tue 15 April, 2025, 10:39 pm

Name: vinisciousjunior Comment: Nice Date: Sun 13 April, 2025, 10:18 am

Name: Anku johnpaul Comment: Good Date: Thu 18 August, 2022, 9:25 pm

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