As a temporary stopgap, reduce the attack surface of the 2.2.22 installation:
Ensure you are running the latest stable version of Apache (currently 2.4.x). Most "exploits" you see online target versions that are years out of date. apache httpd 2222 exploit
Did a name a specific CVE code (like CVE-2021-41773)? As a temporary stopgap, reduce the attack surface of the 2
Understanding and Mitigating the Apache HTTPd 2.2.22 Exploit As a temporary stopgap
: With the session cookie now visible in plain text, Echo bypasses all authentication and logs in as a high-level administrator. The Release of 2.2.22