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.
History

Fri, 13 Mar 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 13 Mar 2026 10:00:00 +0000

Type Values Removed Values Added
First Time appeared Tp-link
Tp-link tl-mr6400
Vendors & Products Tp-link
Tp-link tl-mr6400

Thu, 12 Mar 2026 17:45:00 +0000

Type Values Removed Values Added
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.
Title Command Injection Vulnerability in Telnet CLI on TP-Link TL-MR6400
Weaknesses CWE-78
References
Metrics cvssV4_0

{'score': 8.5, '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: TPLink

Published: 2026-03-12T17:25:58.864Z

Updated: 2026-03-13T14:35:24.733Z

Reserved: 2026-03-09T17:28:57.540Z

Link: CVE-2026-3841

cve-icon Vulnrichment

Updated: 2026-03-13T14:35:21.577Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-03-12T18:16:26.107

Modified: 2026-03-12T21:07:53.427

Link: CVE-2026-3841

cve-icon Redhat

No data.