A vulnerability has been found in BoyunCMS up to 1.21 on PHP7 and classified as critical. Affected by this vulnerability is an unknown functionality of the file install/install2.php of the component Installation Handler. The manipulation of the argument db_host leads to deserialization. The attack can be launched remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. The exploit has been disclosed to the public and may be used.