Which versions of Monsta Ftp are affected by CVE-2025-34299?

Organizations using Monsta FTP versions 2.11 and earlier contain a vulnerability that face critical risk from CVE-2025-34299, a unrestricted file upload vulnerability rated CVSS 9.3.

Is there a public PoC exploit available for CVE-2025-34299?

Yes, a public proof-of-concept exploit is available for CVE-2025-34299. Prioritise patching immediately. EPSS: 58.8%.

How to fix or mitigate CVE-2025-34299?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. Review file handling controls and restrict upload directories.

Monsta Ftp CVE-2025-34299

Q: What is the CVSS score of CVE-2025-34299?

CVE-2025-34299 has a CVSS 4.0 base score of 9.3 (Critical). 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. EPSS exploitation probability: 58.8%.

CRITICAL

Unrestricted Upload of File with Dangerous Type (CWE-434)

2025-11-07 disclosure@vulncheck.com

RCE File Upload Monsta Ftp Monstaftp

9.3

CVSS 4.0 · NVD

Severity by source

NVD PRIMARY

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/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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

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

DescriptionCVE.org

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.

AnalysisAI

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 ContextAI

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.