CVE-2021-4161 json
ICSA-21-357-01 Moxa MGate Protocol Gateways
published 4y ago modified 4mo ago also EUVD-2021-34029
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
The affected products contain vulnerable firmware, which could allow an attacker to sniff the traffic and decrypt login credential details. This could give an attacker admin rights through the HTTP web server.
Patch / fix
- Moxa MGate MB3180 Series 2.2
Is CVE-2021-4161 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerVendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
cisa ICSA-21-357-01 updated cvss 9.8
Moxa MGate Protocol Gateways
-
Moxa MGate MB3180 Series <= 2.2 Moxa MGate MB3280 Series <= 4.1 Moxa MGate MB3480 Series <= 3.2affected: mitigation “Enable 'HTTPS' and disable the HTTP console function under 'Console Settings'” cdn-cms.azureedge.net
From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf
Exploit prediction
0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Affected products
- Moxa MGate MB3180 Series
- Moxa MGate MB3280 Series
- Moxa MGate MB3480 Series
Classification
- Weakness
-
- CWE-319 Cleartext Transmission of Sensitive Information
References
-
cisa.gov
/uscert/ics/advisories/icsa-21-357-01
third-party-advisory, us-government-resource
Sources
- CVE List CVE-2021-4161
- NVD CVE-2021-4161
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