CVE-2025-34299

high-risk
Published 2025-11-07

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.

Do I need to act?

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68.7% chance of exploitation in next 30 days
EPSS score — higher than 31% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Monsta Ftp

Affected Vendors

Monstaftp

References (3)

Exploit https://labs.watchtowr.com/whats-that-coming-over-the-hill-monsta-ftp-remote-cod...
Release Notes https://www.monstaftp.com/notes/
Third Party Advisory https://www.vulncheck.com/advisories/monsta-ftp-unauthenticated-arbitrary-file-u...
56
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 19/34 · Moderate
Exposure 5/34 · Minimal