CVE-2016-5804

mediumpriority · track · 39EPSS 0.011 · 66 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.12% (66th) EPSS

CVSS 5 · medium

Is it mine?

16 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

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.

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

No vendor fix yet; a mitigation is available.

MitigationMGate MB3170cisa_csaf_ot
Moxa has released new versions of firmware, which has enhanced the security of the MB3x70 and MB3x80 families. This new firmware can be located on its web site at the following locations: MB3180, v1.8, MB3280, v2.7, and MB3480, v2.6 (http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=73&type_id=4)
http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=73&type_id=4
MitigationMGate MB3180cisa_csaf_ot
Moxa has released new versions of firmware, which has enhanced the security of the MB3x70 and MB3x80 families. This new firmware can be located on its web site at the following locations: MB3180, v1.8, MB3280, v2.7, and MB3480, v2.6 (http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=73&type_id=4)
http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=73&type_id=4
MitigationMGate MB3270cisa_csaf_ot
Moxa has released new versions of firmware, which has enhanced the security of the MB3x70 and MB3x80 families. This new firmware can be located on its web site at the following locations: MB3180, v1.8, MB3280, v2.7, and MB3480, v2.6 (http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=73&type_id=4)
http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=73&type_id=4
MitigationMGate MB3280cisa_csaf_ot
Moxa has released new versions of firmware, which has enhanced the security of the MB3x70 and MB3x80 families. This new firmware can be located on its web site at the following locations: MB3180, v1.8, MB3280, v2.7, and MB3480, v2.6 (http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=73&type_id=4)
http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=73&type_id=4
MitigationMGate MB3480cisa_csaf_ot
Moxa has released new versions of firmware, which has enhanced the security of the MB3x70 and MB3x80 families. This new firmware can be located on its web site at the following locations: MB3180, v1.8, MB3280, v2.7, and MB3480, v2.6 (http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=73&type_id=4)
http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=73&type_id=4

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 5–9.8

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.09.1criticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondary · CISA US

v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-326USprimaryCWE-326US

affected products (16)

Products and version ranges known to be affected.

Moxa MGate MB3170: <=v2.5all versionscisa_csaf_otUS
Moxa MGate MB3180: <=v1.8all versionscisa_csaf_otUS
Moxa MGate MB3270: <=v2.7all versionscisa_csaf_otUS
Moxa MGate MB3280: <=v2.7all versionscisa_csaf_otUS
Moxa MGate MB3480: <=v2.6all versionscisa_csaf_otUS
Moxa MGate MB3170≤ v2.5cisa_csaf_otUS
Moxa MGate MB3180≤ v1.8cisa_csaf_otUS
Moxa MGate MB3270≤ v2.7cisa_csaf_otUS
Moxa MGate MB3280≤ v2.7cisa_csaf_otUS
Moxa MGate MB3480≤ v2.6cisa_csaf_otUS
n/a n/a≤ n/aenisa_euvdEU
moxa mgate mb3170 firmware< 2.5nvdUScpe:2.3:o:moxa:mgate_mb3170_firmware:*:*:*:*:*:*:*:*
moxa mgate mb3180 firmware< 1.8nvdUScpe:2.3:o:moxa:mgate_mb3180_firmware:*:*:*:*:*:*:*:*
moxa mgate mb3270 firmware< 2.7nvdUScpe:2.3:o:moxa:mgate_mb3270_firmware:*:*:*:*:*:*:*:*
moxa mgate mb3280 firmware< 2.7nvdUScpe:2.3:o:moxa:mgate_mb3280_firmware:*:*:*:*:*:*:*:*
moxa mgate mb3480 firmware< 2.6nvdUScpe:2.3:o:moxa:mgate_mb3480_firmware:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

ICSA-16-196-02Moxa MGate Authentication Bypass Vulnerability2016-04-17icsa · cisa_csaf_otUS
This CSAF advisory was extracted from unstructured data and may contain inaccuracies. If you notice any errors, please reach out to the designated contact at CISA CSAF: central@cisa.dhs.gov

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cisa_csaf_ot nvd NVD CVE.org MITRE

published 2016-07-15modified 2026-06-17

related (697)

Related entries.

ID	severity	EPSS	exploitable	published
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DNN (aka DotNetNuke) 9.2 through 9.2.2 uses a weak encryption algorithm to protect input parameters. NOTE: this issue exists because of an incomplete fix for CVE-2018-15811.
CVE-2018-15811US	high7.5OT critical	76.3% (100th)	KEV	2019-07-03
DNN (aka DotNetNuke) 9.2 through 9.2.1 uses a weak encryption algorithm to protect input parameters.
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Primetek Primefaces 5.x is vulnerable to a weak encryption flaw resulting in remote code execution
CVE-2017-11317US	critical9.8OT critical	84.2% (100th)	KEV	2017-08-23
Telerik.Web.UI in Progress Telerik UI for ASP.NET AJAX before R1 2017 and R2 before R2 2017 SP2 uses weak RadAsyncUpload encryption, which allows remote attackers to perform arbitr…
CVE-2016-2183US	high7.5OT high	94.7% (100th)	Exploit	2016-09-01
The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a birthday bound of approximately four billion blocks, which mak…

+692 more

references (7)

External citations — patches, advisories, analysis.

http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=73&type_id=4Patchcnnvd
https://ics-cert.us-cert.gov/advisories/ICSA-16-196-02 cnnvd
https://www.securityfocus.com/bid/91777 cnnvd
http://www.securityfocus.com/bid/91777 enisa_euvd
https://ics-cert.us-cert.gov/advisories/ICSA-16-196-02 enisa_euvd
http://www.securityfocus.com/bid/91777Third Party AdvisoryVDB Entrynvd
https://ics-cert.us-cert.gov/advisories/ICSA-16-196-02Third Party AdvisoryUS Government Resourcenvd

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