'; } else{ echo ''; } echo 'Hillstone Networks'; } elseif ($_SERVER[HTTP_HOST] == "update1.huaantech.com.cn") { echo ''; echo 'huaantech'; } elseif ($_SERVER[HTTP_HOST] == "update1.dcnetworks.com.cn") { echo ''; echo 'dcnetworks'; } elseif ($_SERVER[HTTP_HOST] == "update1.w-ibeda.com") { if (false===strpos($_SERVER[REQUEST_URI],"/en/")) echo ''; else echo ''; echo 'w-ibeda'; } elseif ($_SERVER[HTTP_HOST] == "update1.hp-telecom.com") { echo ''; echo 'hp-telecom'; } elseif ($_SERVER[HTTP_HOST] == "update1.maipu.com") { echo ''; echo 'Maipu'; } elseif ($_SERVER[HTTP_HOST] == "update1.ncurity.com") { echo ''; echo 'Ncurity'; } elseif ($_SERVER[HTTP_HOST] == "update1.socusnetwork.com") { echo ''; echo 'Socusnetwork'; } else{ echo ''; echo 'Hillstone Networks'; } ?>
 
   
 

web_app:phpstudy_accept_charset_backdoor_command（Rule ID：1070210604）

Release Date：2026/7/27

Rule Name：phpStudy Accept-Charset Backdoor Command Execution Exploitation

Severity：critical

CVE ID：

 

Descripiton：

This backdoor command execution issue affects compromised phpStudy distributions, with exact affected versions not established in the supplied evidence; a single Base64-encoded Accept-Charset header is decoded and evaluated as PHP command code.This rule supports to defend the A6: Vulnerable and Outdated Components of OWASP Top 10 - 2021.
Other reference：None

 

Solution：

Update vendor patches.