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CVE-2026-3841 Detail

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  TPLink
CVSS-B 8.5 HIGH
Vector:  CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware TPLink
https://www.tp-link.com/us/support/faq/5016/ TPLink

Weakness Enumeration

CWE-ID CWE Name Source
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') TPLink  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-3841
NVD Published Date:
03/12/2026
NVD Last Modified:
03/12/2026
Source:
TPLink