ICSA-21-357-01 Moxa MGate Protocol Gateways
Priority MEDIUM 43CWE-319Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-319.
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.
Why it matters now
EPSS 0.00704 53rd percentileScored 2026-11-07
Fix Fixed MGate MB3180 Series (Moxa): 2.2
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Moxa | MGate MB3180 Series | all to before 2.2 | 2.2 | Patch available | CNA |
| Moxa | MGate MB3280 Series | all 4.1 | — | No fix listed | CNA |
| Moxa | MGate MB3480 Series | all 3.2 | — | No fix listed | CNA |
- MGate MB3180 Series VendorMoxa Affected all to before 2.2 Fixed in 2.2 Patch available CNA
- MGate MB3280 Series VendorMoxa Affected all 4.1 Fixed in — No fix listed CNA
- MGate MB3480 Series VendorMoxa Affected all 3.2 Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:moxa:mgate_mb3180_firmware:*:*:*:*:*:*:*:* | up to 2.2 | Vulnerable | Moxa |
| cpe:2.3:h:moxa:mgate_mb3180:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Moxa |
| cpe:2.3:o:moxa:mgate_mb3280_firmware:*:*:*:*:*:*:*:* | up to 4.1 | Vulnerable | Moxa |
| cpe:2.3:h:moxa:mgate_mb3280:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Moxa |
| cpe:2.3:o:moxa:mgate_mb3480_firmware:*:*:*:*:*:*:*:* | up to 3.2 | Vulnerable | Moxa |
| cpe:2.3:h:moxa:mgate_mb3480:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Moxa |
- cpe:2.3:o:moxa:mgate_mb3180_firmware:*:*:*:*:*:*:*:* Versions up to 2.2 Vulnerable ·Moxa
- cpe:2.3:h:moxa:mgate_mb3180:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Moxa
- cpe:2.3:o:moxa:mgate_mb3280_firmware:*:*:*:*:*:*:*:* Versions up to 4.1 Vulnerable ·Moxa
- cpe:2.3:h:moxa:mgate_mb3280:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Moxa
- cpe:2.3:o:moxa:mgate_mb3480_firmware:*:*:*:*:*:*:*:* Versions up to 3.2 Vulnerable ·Moxa
- cpe:2.3:h:moxa:mgate_mb3480:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Moxa
Remediation
- Fix · CNA MGate MB3180 Series (Moxa) Fixed in 2.2
Timeline
- 2026-10-02 Threatist record created from CVE-2021-4161
- 2026-10-03 Alias added: GHSA-628p-46mw-v4f9
- 2026-10-07 EPSS moved to the 50th–90th percentile
References
More Moxa Mgate Mb3180 Firmware vulnerabilities
- TI-2016-05035 Moxa MGate MB3180 before 1.8, MGate MB3280 before 2.7, MGate MB3480 before 2.6, MGate… CVSS 3.1CRITICAL 9.8
- TI-2021-13176 An issue was discovered on MOXA Mgate MB3180 Version 2.1 Build 18113012. CVSS 3.1HIGH 7.5
- TI-2021-13175 An issue was discovered on MOXA Mgate MB3180 Version 2.1 Build 18113012. CVSS 3.1HIGH 7.5
Sources
- CVE-2021-4161 · CVE Program
- CVE-2021-4161 · NVD
- FIRST EPSS
- GHSA-628p-46mw-v4f9 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences