What is CVE-2018-6401?

CVE-2018-6401 is a critical-severity vulnerability in Meross Mss110, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2018-05-02.

How severe is CVE-2018-6401?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2018-6401 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Meross Mss110

CVE-2018-6401

Meross MSS110 devices before 1.1.24 contain a TELNET listener providing access for an undocumented admin account with a blank password.

Published 2018-05-02 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (67.2th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: -0.000

Affected products

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

Public proof-of-concept exploits

garrettmiller/garrettmiller.github.io

References

garrettmiller.github.io/meross-mss110-vuln/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-6401?: CVE-2018-6401 is a critical-severity vulnerability in Meross Mss110, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2018-05-02.
How severe is CVE-2018-6401?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2018-6401 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.