CVE-2026-3841: high-severity vulnerability in TP-Link Systems Inc. TL-MR6400 v5.3
Command Injection Vulnerability in Telnet CLI on TP-Link TL-MR6400
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.5epss 1.9%
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:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
TP-Link Systems Inc. · TL-MR6400 v5.3Related CVEs — TP-Link Systems Inc. TL-MR6400 v5.3
In the same product, most dangerous first.