Ssh-2.0-cisco-1.25 Vulnerability Jun 2026

The SSH-2.0-Cisco-1.25 vulnerability can have significant consequences, including:

: A flaw in the SSHv2 public key authentication implementation could allow a remote attacker to bypass user authentication by using a crafted private key. This requires the attacker to know a valid username and the corresponding public key. SSH Denial of Service (CVE-2020-3200) ssh-2.0-cisco-1.25 vulnerability

| CVE ID | Description | Affected Versions (Example) | |--------|-------------|-----------------------------| | CVE-2007-1242 | SSH v1 buffer overflow (legacy) | Cisco IOS 12.2-12.4 | | CVE-2010-0567 | SSH v2 memory corruption | Cisco IOS 12.2(25) series | | CVE-2015-6294 | SSH key exchange algorithm downgrade | Cisco IOS-XE 3.13S | The SSH-2

: Successful exploitation yields full execution of arbitrary operating system commands. With a CVSS 3.1 score of 10.0 , an attacker completely bypasses local firewalls and access controls to gain total administrative command over the infrastructure target. 2. State-Machine Denial of Service (CVE-2020-3200) With a CVSS 3

First, you must know which of your devices are running the SSH-2.0-Cisco-1.25 banner or similar vulnerable implementations. Network scanners and configuration management tools can help.

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