CVE-2016-5804
No exploitation reported by the sources we read.
- Published2016-07-15
- Fixed in2.5
- WeaknessCWE-326
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.
Timeline
dates in UTC- 2016-07-1516:59CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-5804?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-5804?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.5 | < 2.5 | 2.5 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 1.8 | < 1.8 | 1.8 | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 2.7 | < 2.7 | 2.7 | NVD |
2 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Moxa MGate Authentication Bypass Vulnerability
Moxa MGate MB3180: <=v1.8 · Moxa MGate MB3280: <=v2.7 · Moxa MGate MB3480: <=v2.6 · +2 more
Fix
- Update Moxa mgate mb3170 firmware to 2.5
- Mitigation from the vendor CISA ICSA-16-196-02 · 5 productsMoxa 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=7…
- Mitigation from the vendor CISA ICSA-16-196-02 · 5 productsMB3170, v2.5 and MB3270, v2.7 (http://www.moxa.com/support/sarch_result.aspx?type=soft&prod_id=74&type_id=4)
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.19.8read 2026-10-23
- NVDCVSS 2.05read 2026-10-23
- NVDweakness (CWE)CWE-326read 2026-10-23
- FIRST EPSSEPSS score1.1 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published
- 2016-07-15
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2016-5804?
Is CVE-2016-5804 actively exploited?
What is the CVSS score for CVE-2016-5804?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.