An exploitable authenticated command-injection vulnerability exists in the web server functionality of Moxa NPort W2x50A products with firm…

published 2018-12-06 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11343

cvss: 8.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 4.1%; EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits: 0; none known

An exploitable authenticated command-injection vulnerability exists in the web server functionality of Moxa NPort W2x50A products with firmware before 2.2 Build_18082311. A specially crafted HTTP POST request to /goform/net_WebPingGetValue can result in running OS commands as the root user. This is similar to CVE-2017-12120.

Patch / fix

fixed in 1

moxa nport_w2x50a_firmware 2.2

Exploit prediction

4.10% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

seclists.org http://seclists.org/fulldisclosure/2018/Nov/64 referenced PoC, tagged "exploit" by a source, unverified
packetstormsecurity.com http://packetstormsecurity.com/files/150535/Moxa-NPort-W2x50A-2.1-OS-Command-Injection.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	9.0	AV:N/AC:L/Au:S/C:C/I:C/A:C

Classification

Weakness

CWE-78 Improper Neutralization of Special Elements used in an OS Command

References

seclists.org /fulldisclosure/2018/Nov/64
mailing-list, exploit, third-party-advisory
packetstormsecurity.com /files/150535/Moxa-NPort-W2x50A-2.1-OS-Command-Injection.html
exploit, third-party-advisory, vdb-entry

Sources

CVE List CVE-2018-19659
NVD CVE-2018-19659

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary