CVE-2026-3841
HIGH EPSS 75.4%
Published Mar 12, 20263mo ago · Modified Jun 17, 20261w ago
8.5 CVSS 4.0
Published Mar 12, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Adjacent
Attack Complexity Low
Privileges Required High
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
75.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-78 OS Command Injection Injection
Affected Products 2
References 2
- tp-link.com https://www.tp-link.com/en/support/download/tl-mr6400/v5.30/#Firmware
- tp-link.com https://www.tp-link.com/us/support/faq/5016/
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.