CVE-2025-34299

CRITICAL
2025-11-07 [email protected]
9.3
CVSS 4.0
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CVSS Vector

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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
Analysis Generated
Mar 28, 2026 - 19:20 vuln.today
PoC Detected
Dec 10, 2025 - 19:50 vuln.today
Public exploit code
CVE Published
Nov 07, 2025 - 14:15 nvd
CRITICAL 9.3

Tags

File Upload RCE Monsta Ftp

Description

Monsta FTP versions 2.11 and earlier contain a vulnerability that allows unauthenticated arbitrary file uploads. This flaw enables attackers to execute arbitrary code by uploading a specially crafted file from a malicious (S)FTP server.

Analysis

Monsta FTP web-based file manager versions 2.11 and earlier allow unauthenticated arbitrary file uploads. The vulnerability enables attackers to upload malicious files from a compromised FTP server, which are then executed on the Monsta FTP server, achieving remote code execution.

Technical Context

Monsta FTP acts as a web-based FTP client. The file upload vulnerability allows files from a connected FTP server to be saved to the web server without proper type validation. By connecting to a malicious FTP server, an attacker can serve a PHP webshell that Monsta FTP downloads and makes web-accessible.

Affected Products

['Monsta FTP <= 2.11']

Remediation

Update Monsta FTP to a version beyond 2.11. Implement file type validation on all transferred files. Block PHP execution in FTP transfer directories.

Priority Score

125
Low Medium High Critical
KEV: 0
EPSS: +58.8
CVSS: +46
POC: +20

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CVE-2025-34299 vulnerability details – vuln.today
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