CVE-2025-34299 CRITICAL

CVE-2025-34299: Monsta FTP <= 2.11 Unauthenticated Arbitrary File Upload

Vendor Monsta Limited Of New Zealand
Product Monsta FTP
Weakness CWE-434 · Unrestricted file upload
Published November 7, 2025
Last update May 14, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 7, 2025 CVE published
May 14, 2026 Record updated