CVE-2025-34299

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 v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-434 Unrestricted Upload

Affected Products

Vendor	Product	Versions
monstaftp	monsta_ftp	< 2.11

References

Exploits

https://labs.watchtowr.com/whats-that-coming-over-the-hill-monsta-ftp-remote-code-execution-cve-2025-34299/

Other References

https://www.monstaftp.com/notes/ https://www.vulncheck.com/advisories/monsta-ftp-unauthenticated-arbitrary-file-upload

Frequently Asked Questions

What is CVE-2025-34299? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-34299? +

CVE-2025-34299 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-34299? +

CVE-2025-34299 affects products from monstaftp, specifically: monsta_ftp. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-34299? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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