CVE-2025-34299 | BDVDB-2026-301112 Detail

Monsta Limited of New ZealandMonsta 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.

Impact#

CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs

Weaknesses#

CWE-434 Unrestricted Upload of File with Dangerous Type

References#

Exploit#

https://labs.watchtowr.com/whats-that-coming-over-the-hill-monsta-ftp-remote-code-execution-cve-2025-34299/

History#

Version 12025-11-07Record published in the CVE List.
Version 22026-05-14Most recent update recorded in the CVE List.

Published

Published: 2025-11-07
Last modified: 2026-05-14

Vendor information

Vendor: Monsta Limited of New Zealand
Product: Monsta FTP

All Monsta Limited of New Zealand vulnerabilities

Score

9.3 Critical

EPSS

72.6%, High

Estimated chance of exploitation in the next 30 days. EPSS percentile: 99.5.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Unrestricted File Upload

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
<= 2.11
Fixed
Not stated

Scoring System

CVSS v4.0

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Attack Requirements	None
Privileges Required	None
User Interaction	None
Vulnerable System Confidentiality	High
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).