CVE-2025-34061
PHPStudy 2016-2018 Backdoor Remote Code Execution Vulnerability
- State
- Published
- Severity
- 9.3 Critical
- Published
- Jul 3, 2025
- Updated
- Jul 7, 2025
- Reserved
- Apr 15, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | 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 | VulnCheck |
Weaknesses
- CWE-94 Improper Control of Generation of Code ('Code Injection')
Affected Products
| Product | Versions |
|---|---|
PHPStudyHenan Xiaopi Security Technology Co., Ltd. |
|
References
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