An issue was discovered in SEMCMS v.4.8, allows remote attackers to execute arbitrary code, escalate privileges, and obtain sensitive information via the upload.php file.
SEMCMS 4.8 is vulnerable to Incorrect Access Control. The code installs SEMCMS_Funtion.php before checking if the admin is a valid user in the admin page because authentication function is called from there, users gain admin privileges.
SQL Injection vulnerability in SEMCMS v.4.8 allows a remote attacker to execute arbitrary code and obtain sensitive information via the SEMCMS_Menu.php component.