CVE-2026-3227

published 2026-03-16

CVE-2026-3227: A command injection vulnerability was identified in TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 due to improper neutralization of special elements…

Priority P3 41 medium 6.8 CVSS 3.1

AV A AC L PR H UI N S U C H I H A H

A command injection vulnerability was identified in TP-Link TL-WR802N v4, TL-WR841N v14, and TL-WR840N v6 due to improper neutralization of special elements used in an OS command. In the router configuration import function allows an authenticated attacker to upload a crafted configuration file that results in execution of OS commands with root privileges during port-trigger processing.
Successful exploitation allows an authenticated attacker to execute system commands with root privileges, leading to full device compromise.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
tp-link	tl-wr802n_firmware	< 260304	260304
tp-link	tl-wr840n_firmware	< 260304	260304
tp-link	tl-wr841n_firmware	< 260303	260303
tp-link_systems_inc	tl-wr802n_v4	< V4_260304	V4_260304
tp-link_systems_inc	tl-wr841n_v14	< V14_260303	V14_260303
tp_link_systems_inc	tl-wr840n_v6	< V6_260304	V6_260304

CVSS provenance

nvd v3.1 6.8 MEDIUM CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

nvd v4.0 8.5 HIGH 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

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CWE-78