Sysop Solutions Security Advisory
We are notifying our customers of a security release for ConfigServer Firewall (CSF). cPanel has reported multiple vulnerabilities affecting older versions of the CSF plugin.
We strongly recommend that customers running CSF verify their installed version and update to the patched release as soon as possible.
Successful exploitation of the vulnerabilities could allow an attacker to gain root-level access to an affected server.
Affected Product: ConfigServer Firewall (CSF)
Affected Versions: 16.20-1 and earlier
Patched Version: 16.30-1
Potential Impact: Root-level access
Multiple vulnerabilities have been identified in the ConfigServer Firewall plugin. If successfully exploited, these vulnerabilities may allow an attacker to gain root access to the affected server.
| Product | Affected Versions | Patched Version |
|---|---|---|
| ConfigServer Firewall (CSF) | 16.20-1 and earlier | 16.30-1 |
The recommended mitigation is to update ConfigServer Firewall to the latest available version.
Customers should ensure that CSF is running version 16.30-1 or later.
The appropriate update command depends on your server's operating system.
CentOS 7 / CloudLinux 7
AlmaLinux / CloudLinux 8, 9 & 10
Ubuntu
If your server is managed by Sysop Solutions, our team can verify the installed CSF version and apply the appropriate security update as part of your server management service.
If you manage your server independently, we strongly recommend checking your CSF version and updating it to the patched release.
If you are unsure whether your server is affected or need assistance updating CSF, please contact Sysop Solutions Support.
For complete technical details and the latest security information, please refer to the official cPanel advisory:
Sysop Solutions recommends keeping your server software, firewall and security components up to date.
Regards,
Sysop Solutions
Hosting & Server Management