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VULNERABILITIES

CVE-2026-3841 Details

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

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.8 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware TPLinkProduct
https://www.tp-link.com/us/support/faq/5016/ TPLinkVendor Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')TPLink

Affected Products

ProductVersions
tp-link tl-mr6400 firmware
< 1.9.0

CPE

  • cpe:2.3:o:tp-link:tl-mr6400_firmware:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
tp-link tl-mr6400
5.3

CPE

  • cpe:2.3:h:tp-link:tl-mr6400:5.3:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

4 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-3841
NVD Published Date:
Mar 12, 2026
NVD Last Modified:
Jun 17, 2026
Source:
TPLink
CVE-2026-3841 Details - Not Deferred