HOMEVULNERABILITIESCVE-2023-39982
MEDIUM

CVE-2023-39982

CWE-321Published: September 2, 2023· Updated: Jun 17, 2026

5.9
CVSS v3.1

Official Description

A vulnerability has been identified in MXsecurity versions prior to v1.0.1. The vulnerability may put the confidentiality and integrity of SSH communications at risk on the affected device. This vulnerability is attributed to a hard-coded SSH host key, which might facilitate man-in-the-middle attacks and enable the decryption of SSH traffic.

NVD Source

Technical Analysis

CVE-2023-39982 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), with a CVSS base score of 5.9.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

moxa1 product(s)
mxsecurity
Source: NVD CPE · 1 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

PATCHhttps://www.moxa.com/en/support/product-support/security-advisory/mpsa-230403-mxsecurity-series-multiple-vulnerabilities
PATCHhttps://www.moxa.com/en/support/product-support/security-advisory/mpsa-230403-mxsecurity-series-multiple-vulnerabilities

All References (2)

→
https://www.moxa.com/en/support/product-support/security-advisory/mpsa-230403-mxsecurity-series-multiple-vulnerabilitiesPatch · Vendor Advisory
→
https://www.moxa.com/en/support/product-support/security-advisory/mpsa-230403-mxsecurity-series-multiple-vulnerabilitiesPatch · Vendor Advisory

Quick Facts

CVE IDCVE-2023-39982
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-321
CISA KEVNo
Affected1 vendor(s)
PublishedSep 2, 2023

Related CVEs (CWE-321)

CVE-2014-5419
10.0
CVE-2024-30207
10.0
CVE-2016-9335
10.0
CVE-2024-35344
9.9
CVE-2022-22987
9.8
CVE-2025-12599
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-39982 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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