CVE-2026-3841

HIGH

8.8

Description

A command injection vulnerability has been identified in the Telnet command-line interface (CLI) of TP-Link TL-MR6400 v5.3. This issue is caused by insufficient sanitization of data processed during specific CLI operations. An authenticated attacker with elevated privileges may be able to execute arbitrary system commands. Successful exploitation may lead to full device compromise, including potential loss of confidentiality, integrity, and availability.

CVE Details

CVSS v3.1 Score8.8

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published3/12/2026

Last Modified4/2/2026

Sourcenvd

Honeypot Sightings0

Affected Products

tp-link:tl-mr6400tp-link:tl-mr6400_firmware

Weaknesses (CWE)

CWE-78

References

https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware(f23511db-6c3e-4e32-a477-6aa17d310630)

https://www.tp-link.com/us/support/faq/5016/(f23511db-6c3e-4e32-a477-6aa17d310630)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.