If you're looking for more information on this vulnerability, I recommend checking out:
Magento-Exploits by Ambionics : A well-known collection of scripts for testing various Magento vulnerabilities (SQLi, RCE) up to version 2.3.0. magento 1900 exploit github link
: This flaw allows unauthenticated attackers to exploit the administrative interface. Attackers can inject malicious SQL commands, bypass authentication, and create unauthorized administrator accounts. If you're looking for more information on this
This article explores the technical nature of the vulnerabilities present in Magento 1.9.0.0, the types of exploits publicly available on platforms like GitHub, and how to safely audit and secure legacy environments. The Threat Landscape of Magento 1.9.0.0 magento 1900 exploit github link
Magento Community Edition (CE) 1.6 through 1.9.1.0.
: Run a git status or check for recently modified files in app/code/core/ and the root directory.