Ssh-2.0-cisco-1.25 Vulnerability [hot] Info

: An attacker continuously floods port 22 with unusual or malformed SSH requests.

When an SSH client connects to a server, the server sends a "banner" identifying its software version. In this case, the string breaks down as follows: ssh-2.0-cisco-1.25 vulnerability

While the banner is a standard part of the SSH handshake, it is frequently flagged by security scanners (like Nessus or Qualys) as "potentially vulnerable" because it reveals that the device is running an older or specific version of the Cisco SSH server. Cisco Community Understanding the Banner : Indicates the device is using SSH Protocol Version 2.0. Cisco-1.25 : An attacker continuously floods port 22 with

: This is the most critical step. Immediately review Cisco's Security Advisories for affected products. Fixed software releases are typically available for download from the Cisco Software Center. It is essential to check the specific Cisco bug ID for the device in use, for example CSCvx63027. Cisco Community Understanding the Banner : Indicates the

If a vulnerability assessment tool flags this signature inside your network, you must execute immediate verification and mitigation steps.

When an SSH client connects to a Cisco device, the server returns a banner identifying the SSH protocol version and the server software. SSH-2.0-Cisco-1.25 typically indicates that the device is running a specific version of the Cisco IOS SSH server implementation, which is often tied to older software releases.

The SSH-2.0-Cisco-1.25 vulnerability is caused by a weakness in the way the SSH protocol handles authentication requests. An attacker can exploit this vulnerability by sending a specially crafted SSH packet to the device, which can cause the device to crash or allow the attacker to gain unauthorized access.