CVE-2022-29402

Name: CVE-2022-29402
Creator: NVD / NIST
Published: 2022-05-25T18:15:08.57+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.8/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2022-29402 is a medium-severity vulnerability rated 6.8/10 on the CVSS scale. TP-Link TL-WR840N EU v6.20 was discovered to contain insecure protections for its UART console. This vulnerability allows attackers to connect to the UART port via a serial connection and execute commands as the root user without authentication.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

TP-Link TL-WR840N EU v6.20 was discovered to contain insecure protections for its UART console. This vulnerability allows attackers to connect to the UART port via a serial connection and execute commands as the root user without authentication.

Metrics

CVSS 3.1

6.8/10

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

EPSS Probability

0.42%

33.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Tp-Link	Tl-Wr840n Firmware	All versions

References

https://k4m1ll0.com/cve-tplink-tlwr840N-uart-shell.htmlExploit, Third Party Advisory
https://k4m1ll0.com/cve-tplink-tlwr840N-uart-shell.htmlExploit, Third Party Advisory

Timeline

Published: May 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-29402?

How severe is CVE-2022-29402?

CVE-2022-29402 has a CVSS score of 6.8/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2022-29402?

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-2022-29402?

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

Scan your code now

Source: NVD / NIST