CVE-2020-27735

Name: CVE-2020-27735
Creator: NVD / NIST
Published: 2021-01-26T18:15:46.457+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 5.63%

Last modified Jun 17, 2026

CVE-2020-27735 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. An XSS issue was discovered in Wing FTP 6.4.4. An arbitrary IFRAME element can be included in the help pages via a crafted link, leading to the execution of (sandboxed) arbitrary HTML and JavaScript in the user's browser.. EPSS estimates a 5.63% chance of exploitation in the next 30 days.

Description

An XSS issue was discovered in Wing FTP 6.4.4. An arbitrary IFRAME element can be included in the help pages via a crafted link, leading to the execution of (sandboxed) arbitrary HTML and JavaScript in the user's browser.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

5.63%

92.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Wftpserver	Wing Ftp Server	6.4.4

References

https://wshenk.blogspot.com/2021/01/xss-in-wing-ftps-web-interface-cve-2020.htmlExploit, Third Party Advisory
https://www.wftpserver.com/serverhistory.htmRelease Notes, Vendor Advisory
https://wshenk.blogspot.com/2021/01/xss-in-wing-ftps-web-interface-cve-2020.htmlExploit, Third Party Advisory
https://www.wftpserver.com/serverhistory.htmRelease Notes, Vendor Advisory

Timeline

Published: Jan 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-27735?

How severe is CVE-2020-27735?

CVE-2020-27735 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 5.63% probability of exploitation in the next 30 days.

How do I fix CVE-2020-27735?

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-2020-27735?

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

Scan your code now

Source: NVD / NIST