CVE-2020-18077

Name: CVE-2020-18077
Creator: NVD / NIST
Published: 2021-12-17T17:15:10.48+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.15%

Last modified Jun 17, 2026

CVE-2020-18077 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. A buffer overflow vulnerability in the Virtual Path Mapping component of FTPShell v6.83 allows attackers to cause a denial of service (DoS).. EPSS estimates a 1.15% chance of exploitation in the next 30 days.

Description

A buffer overflow vulnerability in the Virtual Path Mapping component of FTPShell v6.83 allows attackers to cause a denial of service (DoS).

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.15%

63.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions
Ftpshell	Ftpshell Server	6.83

References

https://github.com/cve-vul/vul/blob/master/FTPShell/FTPShell_Server_6.83_DOS.mdExploit, Third Party Advisory
https://github.com/cve-vul/vul/blob/master/FTPShell/FTPShell_Server_6.83_DOS.mdExploit, Third Party Advisory

Timeline

Published: Dec 17, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-18077?

A buffer overflow vulnerability in the Virtual Path Mapping component of FTPShell v6.83 allows attackers to cause a denial of service (DoS).

How severe is CVE-2020-18077?

CVE-2020-18077 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.15% probability of exploitation in the next 30 days.

How do I fix CVE-2020-18077?

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-2020-18077?

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

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Source: NVD / NIST