HOMEVULNERABILITIESCVE-2020-28144
CRITICAL

CVE-2020-28144

CWE-119Published: February 3, 2021· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Certain Moxa Inc products are affected by an improper restriction of operations in EDR-G903 Series Firmware Version 5.5 or lower, EDR-G902 Series Firmware Version 5.5 or lower, and EDR-810 Series Firmware Version 5.6 or lower. Crafted requests sent to the device may allow remote arbitrary code execution.

NVD Source

Technical Analysis

CVE-2020-28144 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

moxa16 product(s)
edr-g903 firmwareedr-g903edr-g903-t firmwareedr-g903-tedr-g902 firmwareedr-g902edr-g902-t firmwareedr-g902-tedr-810-2gsfp firmwareedr-810-2gsfpedr-810-2gsfp-t firmwareedr-810-2gsfp-t+4
Source: NVD CPE · 16 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.moxa.com/en/support/support/security-advisory/edr-g903-g902-810-secure-router-vulnerability
ADVISORYhttps://www.moxa.com/en/support/support/security-advisory/edr-g903-g902-810-secure-router-vulnerability

All References (2)

→
https://www.moxa.com/en/support/support/security-advisory/edr-g903-g902-810-secure-router-vulnerabilityVendor Advisory
→
https://www.moxa.com/en/support/support/security-advisory/edr-g903-g902-810-secure-router-vulnerabilityVendor Advisory

Quick Facts

CVE IDCVE-2020-28144
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-119
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 3, 2021

Related CVEs (CWE-119)

CVE-2011-0264
10.0
CVE-2012-0243
10.0
CVE-2011-0262
10.0
CVE-2011-0263
10.0
CVE-2011-0265
10.0
CVE-1999-0876
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-28144 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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