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 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.

CVSS v4.0

8.5 HIGHCVSS: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

CVSS v3.1

6.8 MEDIUMCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

1.93% chance of exploitation in the next 30 days, 79th percentile

Published

2026-03-13

Updated

2026-07-01

Proof-of-concept exploits (1)

• do4choo/CVE-2026-3227-TP-Link-authenticated-RCE42★ · 2026-06-25

References

• CVE Record
• NVD entry

Related

• CVE-2026-53694
• CVE-2026-32267
• CVE-2026-3228
• CVE-2026-32255
• CVE-2026-32301
• CVE-2026-32254