Dedecms V5.7.115 contains an arbitrary code execution via file upload vulnerability in the backend.

DedeCMS V5.7.115 has a command execution vulnerability via filemanageview.php?fmdo=newfile&activepath.

A vulnerability was found in DedeCMS up to 5.7.115. It has been rated as critical. This issue affects some unknown processing of the file /dede/articlestringmix.php. The manipulation leads to os command injection. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.