CVE-2019-3924

HIGH

MikroTik RouterOS <6.43.12-6.42.12 - RCE

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2019-3924. PoCs published by Jacob Baines.

AI-analyzed exploit summary This exploit leverages CVE-2019-3924 to proxy traffic through a MikroTik RouterOS device, allowing an unauthenticated attacker to target a LAN host (NUUO NVR) from the WAN. It uploads a webshell and executes a reverse shell to a specified listener.

Description

MikroTik RouterOS before 6.43.12 (stable) and 6.42.12 (long-term) is vulnerable to an intermediary vulnerability. The software will execute user defined network requests to both WAN and LAN clients. A remote unauthenticated attacker can use this vulnerability to bypass the router's firewall or for general network scanning activities.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Jacob Baines · textremotehardware
https://www.exploit-db.com/exploits/46444

This exploit leverages CVE-2019-3924 to proxy traffic through a MikroTik RouterOS device, allowing an unauthenticated attacker to target a LAN host (NUUO NVR) from the WAN. It uploads a webshell and executes a reverse shell to a specified listener.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: MikroTik RouterOS (affected versions)
No auth needed
Prerequisites: Access to a vulnerable MikroTik RouterOS device · Network connectivity to the target NUUO NVR · Listener set up for reverse shell
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/46444/
Exploit, Third Party Advisory x_refsource_misc
https://www.tenable.com/security/research/tra-2019-07
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/107177

Scores

CVSS v3 7.5
EPSS 0.1570
EPSS Percentile 96.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-441
Status published
Products (2)
mikrotik/routeros < 6.42.12
mikrotik/routeros < 6.43.12
Published Feb 20, 2019
Tracked Since Feb 18, 2026