CVE-2021-38454: moxa mxview Improper Access Control
CVSS: 10.0v3.1CriticalModified
Published 12-10-2021Last modified 16-09-2024
Vulnerability summary
CVE-2021-38454 is a critical (CVSS 10.0) Improper Access Control vulnerability in moxa mxview. EPSS estimates a 15.79% chance of exploitation in the next 30 days, higher than 96.8% of scored vulnerabilities.
CVSS score
10.0/10
010
Critical · v3.1 (CVE.org)EPSS score
15.79%
0%100%
Medium · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 12-10-2021PublishedVulnerability first disclosed.
- 16-09-2024Last modifiedVulnerability information updated.
Description
A path traversal vulnerability in the Moxa MXview Network Management software Versions 3.x to 3.2.2 may allow an attacker to create or overwrite critical files used to execute code, such as programs or libraries.
CVSS metrics
3 scores · 2 sources · 2 versionsCritical 10.0Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:HSourcesAll 2 agree
- NVDNIST10.0CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
15.79%
Chance of exploitation in the next 30 days
Percentile
97%
Versus all other CVEs
30-day change
0.00 pp
From 15.79% on 21-09-2026
21-09-202621-10-2026
EPSS score15.79%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-284Improper Access ControlThe product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
Affected systems
Moxa2 products
- mxview≥ 3.0, ≤ 3.2.2
- mxview network management software≥ 3.x, ≤ 3.2.2
1 vendor · 2 products
References
1 links
us-cert.cisa.gov/ics/advisories/icsa-21-278-03X Refsource MISCThird Party AdvisoryUS Government Resource