Incorrect Implementation of Authentication Algorithm Vulnerability

published 2023-11-01 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-57920

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.4%; EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits: 0; none known

A vulnerability has been identified in NPort 6000 Series, making the authentication mechanism vulnerable. This vulnerability arises from the incorrect implementation of sensitive information protection, potentially allowing malicious users to gain unauthorized access to the web service.

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-09-05)

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Moxa NPort 6000 Series
moxa nport_6000

Classification

Weakness

CWE-303 Incorrect Implementation of Authentication Algorithm
CWE-257 Storing Passwords in a Recoverable Format
CWE-327 Use of a Broken or Risky Cryptographic Algorithm
CWE-287 Improper Authentication

References

moxa.com /en/support/product-support/security-advisory/mpsa-232905-nport-6000-series-incorrect-implementation-of-authen
vendor-advisory

Sources

CVE List CVE-2023-5627
NVD CVE-2023-5627

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Summary