CVE-2021-27210

Name: CVE-2021-27210
Creator: NVD / NIST
Published: 2021-02-13T01:15:12.797+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.81%

Last modified Jun 17, 2026

CVE-2021-27210 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. TP-Link Archer C5v 1.7_181221 devices allows remote attackers to retrieve cleartext credentials via [USER_CFG#0,0,0,0,0,0#0,0,0,0,0,0]0,0 to the /cgi?1&5 URI.. EPSS estimates a 0.81% chance of exploitation in the next 30 days.

Description

TP-Link Archer C5v 1.7_181221 devices allows remote attackers to retrieve cleartext credentials via [USER_CFG#0,0,0,0,0,0#0,0,0,0,0,0]0,0 to the /cgi?1&5 URI.

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

0.81%

52.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-312

Affected Software

Vendor	Product	Versions
Tp-Link	Archer C5v Firmware	1.7_181221

References

https://gokay.org/tp-links-archer-c5v-improper-authorization/Exploit, Third Party Advisory
https://gokay.org/tp-links-archer-c5v-improper-authorization/Exploit, Third Party Advisory

Timeline

Published: Feb 13, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27210?

TP-Link Archer C5v 1.7_181221 devices allows remote attackers to retrieve cleartext credentials via [USER_CFG#0,0,0,0,0,0#0,0,0,0,0,0]0,0 to the /cgi?1&5 URI.

How severe is CVE-2021-27210?

CVE-2021-27210 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27210?

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-2021-27210?

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

Scan your code now

Source: NVD / NIST