CVE-2025-34061
CRITICALPHPStudy 2016-2018 - Unauthenticated Remote Code Execution via Accept-Charset Header
Title source: llmExploitation Summary
EIP tracks 1 public exploit for CVE-2025-34061.
PoCs published by Dimensional, Airevan, including Metasploit module exploits/multi/http/phpstudy_backdoor_rce.
AI-analyzed exploit summary This Metasploit module exploits a backdoor in PHPStudy (2016-2018) by sending a base64-encoded payload via the 'Accept-Charset' header to achieve remote code execution. The check function verifies vulnerability by injecting a random string and confirming its presence in the response.
Description
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.
Exploits (1)
This Metasploit module exploits a backdoor in PHPStudy (2016-2018) by sending a base64-encoded payload via the 'Accept-Charset' header to achieve remote code execution. The check function verifies vulnerability by injecting a random string and confirming its presence in the response.
References (2)
Scores
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X