What is CVE-2021-41635?

CVE-2021-41635 is a high-severity vulnerability in Melag FTP Server, classified under Incorrect Default Permissions. CVSS score: 8.8/10. Published 2022-06-24.

How severe is CVE-2021-41635?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Melag FTP Server

CVE-2021-41635

When installed as Windows service MELAG FTP Server 2.2.0.4 is run as SYSTEM user, which grants remote attackers to abuse misconfigurations or vulnerabilities with administrative access over the entire host system.

Published 2022-06-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.021 (81.3th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: +0.001

Affected products

Melag FTP Server — versions 2.2.0.4
Microsoft Windows

Weakness classification (CWE)

CWE-276 — Incorrect Default Permissions

References

www.securesystems.de/blog/advisory-and-exploitation-the-melag-ftp-server/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-41635?: CVE-2021-41635 is a high-severity vulnerability in Melag FTP Server, classified under Incorrect Default Permissions. CVSS score: 8.8/10. Published 2022-06-24.
How severe is CVE-2021-41635?: High severity. CVSS v3 base score is 8.8 out of 10.