CVE-2017-6884

HIGH KEV RANSOMWARE

Zyxel EMG2926 V1.00(AAQT.4)b8 - Command Injection

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2017-6884 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added September 18, 2023, with confirmed use in ransomware campaigns. EIP tracks 1 public exploit from researchers including trevor Hough.

AI-analyzed exploit summary This exploit demonstrates an OS command injection vulnerability in Zyxel EMG2926 routers via the nslookup diagnostic tool. It allows arbitrary command execution, including reverse shell establishment and password file dumping.

Description

A command injection vulnerability was discovered on the Zyxel EMG2926 home router with firmware V1.00(AAQT.4)b8. The vulnerability is located in the diagnostic tools, specifically the nslookup function. A malicious user may exploit numerous vectors to execute arbitrary commands on the router, such as the ping_ip parameter to the expert/maintenance/diagnostic/nslookup URI.

Exploits (1)

exploitdb WORKING POC
by trevor Hough · textwebappshardware
https://www.exploit-db.com/exploits/41782

This exploit demonstrates an OS command injection vulnerability in Zyxel EMG2926 routers via the nslookup diagnostic tool. It allows arbitrary command execution, including reverse shell establishment and password file dumping.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: Zyxel EMG2926 < V1.00(AAQT.4)b8
Auth required
Prerequisites: Network access to the router's web interface · Valid authentication credentials
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/41782/

Scores

CVSS v3 8.8
EPSS 0.3763
EPSS Percentile 98.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact partial

Details

CISA KEV 2023-09-18
VulnCheck KEV 2020-01-08
InTheWild.io 2017-04-12
ENISA EUVD EUVD-2017-15938
Ransomware Use Confirmed
CWE
CWE-78
Status published
Products (1)
zyxel/emg2926_firmware v1.00\(aaqt.4\)b8
Published Apr 06, 2017
KEV Added Sep 18, 2023
Tracked Since Feb 18, 2026