CVE-2021-41636

Name: CVE-2021-41636
Creator: NVD / NIST
Published: 2022-06-24T12:15:08.113+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.32%

Last modified Jun 17, 2026

CVE-2021-41636 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. MELAG FTP Server 2.2.0.4 allows an attacker to use the CWD command to break out of the FTP servers root directory and operate on the entire operating system, while the access restrictions of the user running the FTP server apply.. EPSS estimates a 1.32% chance of exploitation in the next 30 days.

Description

MELAG FTP Server 2.2.0.4 allows an attacker to use the CWD command to break out of the FTP servers root directory and operate on the entire operating system, while the access restrictions of the user running the FTP server apply.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.32%

67.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Melag	Ftp Server	2.2.0.4

References

https://www.securesystems.de/blog/advisory-and-exploitation-the-melag-ftp-server/Exploit, Mitigation, Third Party Advisory
https://www.securesystems.de/blog/advisory-and-exploitation-the-melag-ftp-server/Exploit, Mitigation, Third Party Advisory

Timeline

Published: Jun 24, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41636?

How severe is CVE-2021-41636?

CVE-2021-41636 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.32% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41636?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-41636?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST