HOMEVULNERABILITIESCVE-2019-9101
HIGH

CVE-2019-9101

CWE-319Published: March 11, 2020· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

An issue was discovered on Moxa MGate MB3170 and MB3270 devices before 4.1, MB3280 and MB3480 devices before 3.1, MB3660 devices before 2.3, and MB3180 devices before 2.1. Sensitive information is sent to the web server in cleartext, which may allow an attacker to discover the credentials if they are able to observe traffic between the web browser and the server.

NVD Source

Technical Analysis

CVE-2019-9101 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

moxa12 product(s)
mb3170 firmwaremb3170mb3270 firmwaremb3270mb3180 firmwaremb3180mb3280 firmwaremb3280mb3480 firmwaremb3480mb3660 firmwaremb3660
Source: NVD CPE · 12 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.moxa.com/en/support/support/security-advisory/mb3710-3180-3270-3280-3480-3660-vulnerabilities
ADVISORYhttps://www.us-cert.gov/ics/advisories/icsa-20-056-01
ADVISORYhttps://www.moxa.com/en/support/support/security-advisory/mb3710-3180-3270-3280-3480-3660-vulnerabilities
ADVISORYhttps://www.us-cert.gov/ics/advisories/icsa-20-056-01

All References (4)

→
https://www.moxa.com/en/support/support/security-advisory/mb3710-3180-3270-3280-3480-3660-vulnerabilitiesVendor Advisory
→
https://www.us-cert.gov/ics/advisories/icsa-20-056-01Third Party Advisory · US Government Resource
→
https://www.moxa.com/en/support/support/security-advisory/mb3710-3180-3270-3280-3480-3660-vulnerabilitiesVendor Advisory
→
https://www.us-cert.gov/ics/advisories/icsa-20-056-01Third Party Advisory · US Government Resource

Quick Facts

CVE IDCVE-2019-9101
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-319
CISA KEVNo
Affected1 vendor(s)
PublishedMar 11, 2020

Related CVEs (CWE-319)

CVE-2025-4378
10.0
CVE-2025-47419
10.0
CVE-2019-18852
9.8
CVE-2017-15999
9.8
CVE-2018-1297
9.8
CVE-2016-5649
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-9101 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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