Ssh-2.0-cisco-1.25 Vulnerability Jun 2026

Do not rely on the banner signature alone, as it can report false positives on safely modified devices. Access the command-line interface (CLI) of your appliance and verify the exact running image version: Router# show version Router# show ip ssh Use code with caution. Step 2: Utilize the Cisco Software Checker

SSH-2.0-Cisco-2.22 (IOS 15.9) SSH-2.0-Cisco-2.36 (IOS-XE 16.x)

The identifier is a software version string returned by the SSH banner on many Cisco IOS-based devices. While not a specific vulnerability name itself, this version string is frequently associated with several critical security flaws that affect the SSH implementation in Cisco IOS and IOS XE software. Notable Vulnerabilities Associated with Cisco SSH

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Cisco has released software updates to address these vulnerabilities across its product lines. Administrators are advised to:

If your scanner has flagged this banner, follow these steps to mitigate the risk: Step 1: Update Your IOS/IOS XE Software

By combining software updates with strict configuration hardening, you can successfully protect your infrastructure from exploits targeting legacy Cisco SSH versions. ssh-2.0-cisco-1.25 vulnerability

Two things made the difference: quick containment and a tested patch plan. Because Rosa prioritized limiting access first, even if an exploit existed, attackers had far fewer opportunities. Because she tested upgrades in a lab, the hospital avoided a surprise outage.

In many cases, devices running cisco-1.25 have reached "End of Life" (EOL) and "End of Support" (EOS). This means Cisco no longer releases patches for them. If the hardware cannot support modern IOS versions, the device must be replaced.

The SSH protocol begins with a server identification string (RFC 4253, section 4.2): Do not rely on the banner signature alone,

: Use central AAA (e.g., RADIUS/TACACS+) for authentication, authorization, and accounting. This provides logging, granular control, and helps prevent unauthorized privilege escalation, like the CVE-2015-0721 bypass.

October 26, 2023 Target Service: SSH-2.0-Cisco-1.25 Severity: High to Critical (Context Dependent)