VulnerabilityAnalyzed
CVE-2025-34299
Monsta FTP versions 2.11 and earlier contain a vulnerability that allows unauthenticated arbitrary file uploads.
CRITICAL 9.3EPSS 72.9%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 72.9%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 4.0
- 9.3 CRITICALCVSS: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/M
- EPSS
- 72.85% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-434
- Affected
- monstaftp/monsta ftp
- Source
- disclosure@vulncheck.com
References
- https://labs.watchtowr.com/whats-that-coming-over-the-hill-monsta-ftp-remote-code-execution-cve-2025-34299/Exploit, Third Party Advisory
- https://www.monstaftp.com/notes/Release Notes
- https://www.vulncheck.com/advisories/monsta-ftp-unauthenticated-arbitrary-file-uploadThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.