CVE-2020-9374

CRITICAL EXPLOITED

TP-Link TL-WR849N 0.9.1 4.16 - Remote Code Execution via Traceroute Shell Metacharacter Injection

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2020-9374 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 1 public exploit from researchers including Elber Tavares.

AI-analyzed exploit summary This exploit leverages a command injection vulnerability in TP-Link TL-WR849N routers by injecting arbitrary commands into the `host` parameter of a traceroute diagnostic request. It establishes a session with authentication and executes commands via a crafted POST request.

Description

On TP-Link TL-WR849N 0.9.1 4.16 devices, a remote command execution vulnerability in the diagnostics area can be exploited when an attacker sends specific shell metacharacters to the panel's traceroute feature.

Exploits (1)

exploitdb WORKING POC
by Elber Tavares · pythonwebappshardware
https://www.exploit-db.com/exploits/48155

This exploit leverages a command injection vulnerability in TP-Link TL-WR849N routers by injecting arbitrary commands into the `host` parameter of a traceroute diagnostic request. It establishes a session with authentication and executes commands via a crafted POST request.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: TP-Link TL-WR849N 0.9.1 4.16
Auth required
Prerequisites: Network access to the router's web interface · Valid authentication credentials for the router
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory x_refsource_misc
https://fireshellsecurity.team/hack-n-routers/
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
http://packetstormsecurity.com/files/156584/TP-Link-TL-WR849N-Remote-Code-Execution.html

Scores

CVSS v3 9.8
EPSS 0.4205
EPSS Percentile 98.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

VulnCheck KEV 2026-03-23
CWE
CWE-78
Status published
Products (1)
tp-link/tl-wr849n_firmware 0.9.1_4.16
Published Feb 24, 2020
Tracked Since Feb 18, 2026