If you are running version 11.40—nulled or otherwise—your server is extremely vulnerable to this attack. The only protection is to upgrade to a patched, fully-supported version, which is impossible with a nulled license.
cPanel & WHM version 11.40 reached its End of Life (EOL) around November 2014. That means it hasn't received a single security patch, bug fix, or compatibility update in over a decade. In the web hosting world, running software this outdated is like leaving your server's front door wide open with a neon sign inviting attackers. Cpanel Whm 11 Final Nulled 40
Stealing your server's CPU and RAM resources to mine cryptocurrency, spiking your hosting costs or causing server crashes. 2. Complete Data Vulnerability If you are running version 11
For those running a properly licensed but outdated version (post-11.40), an immediate upgrade to a patched version is critical. The official patches for CVE-2026-41940 are included in versions such as 11.86.0.41 , 11.110.0.97 , and many others. Use the /scripts/upcp --force command from the command line to force an update to the latest stable build. That means it hasn't received a single security