CVE-2026-3227

Summary

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 Software

VendorProductVersion RangeStatus
TP-Link Systems Inc.TL-WR802N v40 < V4_260304affected
TP-Link Systems Inc.TL-WR841N v140 < V14_260303affected
TP Link Systems Inc.TL-WR840N v60 < V6_260304affected

Weaknesses

  • CWE-78: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: total

References