by Kastro
Paper/Archive/CVE-2025-34061

CVE-2025-34061

Henan Xiaopi Security Technology Co., Ltd. PHPStudy — PHPStudy 2016-2018 Backdoor Remote Code Execution Vulnerability

EPSS 2%CVSS 9.3
critical.is priorityof 100
44
CVSS 9.3 (CNA)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 80.2.802 × 2016.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

A backdoor in PHPStudy versions 2016 through 2018 allows unauthenticated remote attackers to execute arbitrary PHP code on affected installations. The backdoor listens for base64-encoded PHP payloads in the Accept-Charset HTTP header of incoming requests, decodes and executes the payload without proper validation. This leads to remote code execution as the web server user, compromising the affected system.

Affected

ProductAffectedFixed inSource
PHPStudy2016 – 2018–CNA

Scores by source

VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

exploitraw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/multi/http/phpstudy_backdoor_rce.rbrefxp.cn/phpstudy