CVE-2026-3841HIGH 8.8EPSS p75.3%

CVE-2026-3841CVE-2026-3841

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.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS1.77% probability of exploitation · percentile 75.3% · 2026-06-19T12:03:05Z
Published2026-03-12
Last modified2026-04-02

Underlying weaknesses· 1

CWE-78

References

  1. https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware
  2. https://www.tp-link.com/us/support/faq/5016/

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in an OS Command ('OS Command Injection')cwe-780%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.