Hi @sahmed and welcome to the community 
Your version is past EOL. You should upgrade to either the latest version or the current LTS at your earliest convenience. Your upgrade path is:
7.9.5 → 7.9.6 → 8.9.3 → 9.2.1 (last step optional)
You may find the Upgrade Guide and the LTS-to-LTS Upgrade Notes helpful. If you have questions about upgrading, feel free to open a new thread for that here.
for general information about CVE-2021-44228 you can read our announcement here.