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CVE-2021-40390: moxa mxview Use of Hard-coded Credentials

CVSS: 10.0v3.0CriticalModified
Published 14-04-2022Last modified 15-04-2025
Open JSON

Vulnerability summary

CVE-2021-40390 is a critical (CVSS 10.0) Use of Hard-coded Credentials vulnerability in moxa mxview. EPSS estimates a 2.46% chance of exploitation in the next 30 days, higher than 84.2% of scored vulnerabilities. 1 public exploit is recorded.

Overall risk
90/100
0100
Critical · default modelHow is this calculated?
CVSS score
10.0/10
010
Critical · v3.0 (CVE.org)
EPSS score
2.46%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference

Timeline

  1. 14-04-2022
    PublishedVulnerability first disclosed.
  2. 15-04-2025
    Last modifiedVulnerability information updated.

Description

An authentication bypass vulnerability exists in the Web Application functionality of Moxa MXView Series 3.2.4. A specially-crafted HTTP request can lead to unauthorized access. An attacker can send an HTTP request to trigger this vulnerability.

CVSS metrics

4 scores · 2 sources · 3 versions

EPSS trend

Probability

2.46%

Chance of exploitation in the next 30 days

Percentile

84%

Versus all other CVEs

30-day change

0.00 pp

From 2.46% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.46%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found
  • referenceUnverified

    Exploit Reference (talosintelligence.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Moxa2 products

1 vendor · 2 products

References

1 links