CVE-2025-34299 in the critical feed json
Monsta FTP <= 2.11 Unauthenticated Arbitrary File Upload
published 2025-11-07 12 mo ago modified 2026-10-18 21 d ago also EUVD-2025-38247
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 72.7%
- EPSS 72.7% chance of exploitation in 30 days, percentile 99.4%
- public exploits
- 1
- Metasploit, plus a Nuclei check
Summary
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.
Patch / fix
- monstaftp.com/notes/ patch
Timeline
- First public exploit (Metasploit exploit/multi/http/monsta_ftp_downloadfile_rce)
- Published
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 12 mo ago
Exploit prediction
72.68% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- Metasploit exploit/multi/http/monsta_ftp_downloadfile_rce Monsta FTP downloadFile Remote Code Execution metasploit exploit, excellent rank, 2025-11-07
- Nuclei template Monsta FTP <= 2.11.2 - Unauthenticated Remote Code Execution nuclei detection template
- labs.watchtowr.com https://labs.watchtowr.com/whats-that-coming-over-the-hill-monsta-ftp-remote-code-execution-cve-2025-34299/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | 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 |
| CNA | 4.0 | 9.3 | 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 |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Monsta Limited of New Zealand Monsta FTP
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
References
-
monstaftp.com
/notes/
release-notes, patch
-
labs.watchtowr.com
/whats-that-coming-over-the-hill-monsta-ftp-remote-code-execution-cve-2025-34299/
technical-description, exploit, third-party-advisory
-
vulncheck.com
/advisories/monsta-ftp-unauthenticated-arbitrary-file-upload
third-party-advisory
Sources
- CVE List CVE-2025-34299
- NVD CVE-2025-34299
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