What is CVE-2021-3458?

CVE-2021-3458 is a medium-severity vulnerability in Motorola Mm1000, classified under Improper Authentication. CVSS score: 6.1/10. Published 2021-08-17.

How severe is CVE-2021-3458?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Auth bypass in Motorola Mm1000

CVE-2021-3458

The Motorola MM1000 device configuration portal can be accessed without authentication, which could allow adapter settings to be modified.

Vulnerability class: Broken Authentication

Published 2021-08-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (13.7th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000

Affected products

Motorola Mm1000
Motorola Mm1000 Firmware
Motorola Mm1000 Moca Adapter — versions unspecified

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

motorolamentor.zendesk.com/hc/en-us/articles/1260804047750 (Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2021-3458?: CVE-2021-3458 is a medium-severity vulnerability in Motorola Mm1000, classified under Improper Authentication. CVSS score: 6.1/10. Published 2021-08-17.
How severe is CVE-2021-3458?: Medium severity. CVSS v3 base score is 6.1 out of 10.