CVE-2021-46122

Name: CVE-2021-46122
Creator: NVD / NIST
Published: 2022-04-18T16:15:08.003+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 1.49%

Last modified Jun 17, 2026

CVE-2021-46122 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. Tp-Link TL-WR840N (EU) v6.20 Firmware (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n) is vulnerable to Buffer Overflow via the Password reset feature.. EPSS estimates a 1.49% chance of exploitation in the next 30 days.

Description

Tp-Link TL-WR840N (EU) v6.20 Firmware (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n) is vulnerable to Buffer Overflow via the Password reset feature.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

1.49%

70.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-120

Affected Software

Vendor	Product	Versions	Update
Tp-Link	Tl-Wr840n Firmware	0.9.1_4.17_v0001.0	Build 201124 Rel.64328n

References

https://k4m1ll0.com/cve-tplink-tlwr840n-euV620-password-reset.htmlExploit, Third Party Advisory
https://k4m1ll0.com/cve-tplink-tlwr840n-euV620-password-reset.htmlExploit, Third Party Advisory

Timeline

Published: Apr 18, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-46122?

Tp-Link TL-WR840N (EU) v6.20 Firmware (0.9.1 4.17 v0001.0 Build 201124 Rel.64328n) is vulnerable to Buffer Overflow via the Password reset feature.

How severe is CVE-2021-46122?

CVE-2021-46122 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 1.49% probability of exploitation in the next 30 days.

How do I fix CVE-2021-46122?

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-2021-46122?

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

Scan your code now

Source: NVD / NIST