Critical 9.3Published Nov 7, 2025

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

Updated under an hour ago (Oct 26, 2026, 11:00 AM ET)

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It affects Monsta Limited of New Zealand Monsta FTP and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Monsta Limited of New Zealand Monsta FTP

Exploited in the last 30 days

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.

CVSS: 9.3 CRITICAL (v4.0, CNA)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
Weakness (CWE): CWE-434
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: May 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Monsta Limited of New Zealand Monsta FTP monsta_limited_of_new_zealand:monsta_ftp (from the name)	through 2.11	CNA record
monstaftp monsta_ftp monstaftp:monsta_ftp	through 2.11	NVD

References

https://www.monstaftp.com/notes/release-notes, patch
https://labs.watchtowr.com/whats-that-coming-over-the-hill-monsta-ftp-remote-code-execution-cve-2025-34299/technical-description, exploit, third-party-advisory
https://www.vulncheck.com/advisories/monsta-ftp-unauthenticated-arbitrary-file-uploadthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.