Gain a foothold within the local network to launch further attacks. Affected Devices
Insufficient restrictions on access to internal services through the SSH interface.
To move forward, please share a . I'll be glad to create safe, informative content for defenders. ssh20cisco125 vulnerability
Search examples (internal use):
Immediately apply patches from the Cisco Security Advisory portal to address RCE and privilege escalation risks. Gain a foothold within the local network to
Whether your enterprise utilizes a centralized architecture for administrative SSH connections?
Vulnerabilities involving network daemons and architectural configurations often surface due to systematic failures in how data inputs are handled or how resources are allocated during unexpected states. System administrators generally observe three core families of programmatic flaws within this landscape. A. Out-of-Bounds Read Mechanics (CWE-125) I'll be glad to create safe, informative content
! Define an object-group for allowed bastion hosts object-group network ADMIN_BASTIONS host 10.100.45.10 host 10.100.45.11 ! ! Apply restricted access to virtual terminal lines access-list 125 permit tcp object-group ADMIN_BASTIONS any eq 22 access-list 125 deny tcp any any eq 22 ! line vty 0 4 access-class 125 in transport input ssh Use code with caution. 2. Implementation of Control Plane Policing (CoPP)
Most IT professionals encounter this through automated vulnerability scanners like . The scanner identifies that the web interface (usually running on port 80 or 443) is active and running a firmware version known to be susceptible to RCE or denial-of-service attacks. Mitigation and Fixes
Attackers do not need valid usernames or passwords to exploit this. They can attack the device directly from the internet or an internal network.
Cisco's SSH implementation is not a new threat vector; the company has been addressing related vulnerabilities for over two decades. Understanding this history helps contextualize current and future risks. The following table outlines some of the most critical and representative vulnerabilities in recent years.