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CVE-2026-3227

nvd nist
Published: Mar 16, 2026Modified: Jul 1, 2026

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8.5
Vector
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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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:XShow less
Source: f23511db-6c3e-4e32-a477-6aa17d310630 (Secondary)

Description

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 (3)

Tp Link
3 products
Tl Wr802n Firmware
Tl Wr841n Firmware
Tl Wr840n Firmware
Configuration A
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Tl Wr802n Firmware
Before 260304
Running on/withPlatform Versions
Tp Link
Tl Wr802n
Version v4
Configuration B
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Tl Wr841n Firmware
Before 260303
Running on/withPlatform Versions
Tp Link
Tl Wr841n
Version 14
Configuration C
1 vulnerable · 1 platform
Vulnerable SoftwareAffected Versions
Tl Wr840n Firmware
Before 260304
Running on/withPlatform Versions
Tp Link
Tl Wr840n
Version 6

Related CWEs

CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

References (6)

Source: f23511db-6c3e-4e32-a477-6aa17d310630
Product
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Product
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Product
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Product
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Product
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Vendor Advisory

Timeline

No history available yet.