Ssh-2.0-cisco-1.25 Vulnerability =link= Jun 2026

Academic and industry scans have consistently detected the SSH-2.0-Cisco-1.25 banner in significant numbers globally. The real-world viability of these vulnerabilities is supported by the fact that some of the associated CVEs (particularly CVE-2015-0721) have exploit modules available in frameworks like , showing that exploitation is not just theoretical.

The identification string SSH-2.0-Cisco-1.25 is a common sight for network engineers, appearing during SSH connections to a vast number of Cisco switches and routers. It is not merely a version number; it's a digital banner announced by the SSH server on a device as soon as a TCP connection is established on port 22. ssh-2.0-cisco-1.25 vulnerability

: If an environment has RSA public-key authentication configured , an attacker who discovers a valid local username can gain shell access with the underlying privileges assigned to that terminal line. 2. Device Reload and Denial of Service (CVE-2020-3200) Academic and industry scans have consistently detected the

Crafting an SSH inbound request using an invalid or specifically malformed reverse-login username causes an unhandled memory exception inside the Cisco internal SSH state machine. The operating system crashes and forces a cold reboot. 3. Weak Cryptographic Cipher Suites It is not merely a version number; it's