CVE-2019-19142

HIGH

Intelbras WRN 240 Firmware - Unauthenticated Firmware Replacement via Firmware.cfg URI

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-19142. PoCs published by Elber Tavares.

AI-analyzed exploit summary This exploit demonstrates an authentication bypass vulnerability in Intelbras WRN240 routers, allowing unauthenticated firmware upload via a POST request to a specific URI. The PoC uses curl to send a malicious configuration file, potentially leading to full device compromise.

Description

Intelbras WRN240 devices do not require authentication to replace the firmware via a POST request to the incoming/Firmware.cfg URI.

Exploits (1)

exploitdb WORKING POC
by Elber Tavares · textwebappshardware
https://www.exploit-db.com/exploits/48158

This exploit demonstrates an authentication bypass vulnerability in Intelbras WRN240 routers, allowing unauthenticated firmware upload via a POST request to a specific URI. The PoC uses curl to send a malicious configuration file, potentially leading to full device compromise.

Classification
Working Poc 90%
Attack Type
Auth Bypass
Complexity
Trivial
Reliability
Reliable
Target: Intelbras Wireless N 150Mbps WRN240
No auth needed
Prerequisites: Network access to the target device · A malicious configuration file (config.bin)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Exploit, Third Party Advisory x_refsource_misc
https://fireshellsecurity.team/hack-n-routers/

Scores

CVSS v3 7.5
EPSS 0.0781
EPSS Percentile 93.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Details

CWE
CWE-306
Status published
Products (1)
intelbras/wrn_240_firmware 2.0.0
Published Jan 17, 2020
Tracked Since Feb 18, 2026