CVE-2025-34299

critical · 9.3

A public exploit / detection template exists

Weaponised detection is publicly available, which meaningfully raises real-world risk regardless of CVSS. nuclei-templates →

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.

9.3

CVSS

72.9%

EPSS (exploit prob.)

99th

EPSS percentile

2025-11-07

Published

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

Weaknesses

CWE-434

Affected products

Vendor	Product	Affected versions
monstaftp	monsta_ftp	<= 2.11

Check a specific version with /api/v1/cve/match.

References

https://labs.watchtowr.com/whats-that-coming-over-the-hill-monsta-ftp-remote-code-execution-cve-2025-34299/
https://www.monstaftp.com/notes/
https://www.vulncheck.com/advisories/monsta-ftp-unauthenticated-arbitrary-file-upload

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2025-34299