This article provides a comprehensive overview of what this signature means, why it is considered a vulnerability, the potential risks involved, and how to mitigate it effectively as of 2026. What is SSH-2.0-Cisco-1.25?
The identifier is not a specific vulnerability itself, but rather the SSH banner string that many Cisco IOS and IOS XE devices use to identify their software version during an SSH handshake. When vulnerability scanners flag this string, they are typically reporting that the device is susceptible to a broader protocol-level flaw, most commonly the Terrapin Attack (CVE-2023-48795). What is the SSH-2.0-Cisco-1.25 "Vulnerability"? ssh-2.0-cisco-1.25 vulnerability
The risk level of this vulnerability is considered , as it can allow an attacker to gain unauthorized access to the device and potentially compromise the system's confidentiality, integrity, and availability. This article provides a comprehensive overview of what
Consult the Cisco Security Advisories page to identify the fixed release for your specific hardware. When vulnerability scanners flag this string, they are
Devices reporting SSH-2.0-Cisco-1.25 are often running software that has reached End-of-Life. This means they no longer receive security patches for newly discovered vulnerabilities, making them a persistent security liability.