CVE-2016-5804

Name: CVE-2016-5804
Creator: NVD / NIST
Published: 2016-07-15T16:59:14.347+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 1.12%

Last modified Jun 17, 2026

CVE-2016-5804 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Moxa MGate MB3180 before 1.8, MGate MB3280 before 2.7, MGate MB3480 before 2.6, MGate MB3170 before 2.5, and MGate MB3270 before 2.7 use weak encryption, which allows remote attackers to bypass authentication via a brute-force series of guesses for a parameter value.. EPSS estimates a 1.12% chance of exploitation in the next 30 days.

Description

Moxa MGate MB3180 before 1.8, MGate MB3280 before 2.7, MGate MB3480 before 2.6, MGate MB3170 before 2.5, and MGate MB3270 before 2.7 use weak encryption, which allows remote attackers to bypass authentication via a brute-force series of guesses for a parameter value.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.12%

61.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-326

Affected Software

Vendor	Product	Versions
Moxa	Mgate Mb3180 Firmware	< 1.8
Moxa	Mgate Mb3280 Firmware	< 2.7
Moxa	Mgate Mb3480 Firmware	< 2.6
Moxa	Mgate Mb3170 Firmware	< 2.5
Moxa	Mgate Mb3270 Firmware	< 2.7

References

http://www.securityfocus.com/bid/91777Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-16-196-02Third Party Advisory, US Government Resource
http://www.securityfocus.com/bid/91777Third Party Advisory, VDB Entry
https://ics-cert.us-cert.gov/advisories/ICSA-16-196-02Third Party Advisory, US Government Resource

Timeline

Published: Jul 15, 2016
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-5804?

How severe is CVE-2016-5804?

CVE-2016-5804 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2016-5804?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-5804?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST