CVE-2021-20163

Name: CVE-2021-20163
Creator: NVD / NIST
Published: 2021-12-30T22:15:09.26+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.9/10EPSS 0.79%

Last modified Jun 17, 2026

CVE-2021-20163 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. Trendnet AC2600 TEW-827DRU version 2.08B01 leaks information via the ftp web page. Usernames and passwords for all ftp users are revealed in plaintext on the ftpserver.asp page.. EPSS estimates a 0.79% chance of exploitation in the next 30 days.

Description

Trendnet AC2600 TEW-827DRU version 2.08B01 leaks information via the ftp web page. Usernames and passwords for all ftp users are revealed in plaintext on the ftpserver.asp page.

Metrics

CVSS 3.1

4.9/10

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

EPSS Probability

0.79%

51.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-522

Affected Software

Vendor	Product	Versions
Trendnet	Tew-827dru Firmware	2.08b01

References

https://www.tenable.com/security/research/tra-2021-54Third Party Advisory
https://www.tenable.com/security/research/tra-2021-54Third Party Advisory

Timeline

Published: Dec 30, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20163?

Trendnet AC2600 TEW-827DRU version 2.08B01 leaks information via the ftp web page. Usernames and passwords for all ftp users are revealed in plaintext on the ftpserver.asp page.

How severe is CVE-2021-20163?

CVE-2021-20163 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20163?

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-2021-20163?

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

Scan your code now

Source: NVD / NIST