What is CVE-2021-46006?

CVE-2021-46006 is a medium-severity vulnerability in Totolink A3100r, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2022-03-30.

How severe is CVE-2021-46006?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Totolink A3100r

CVE-2021-46006

In Totolink A3100R V5.9c.4577, "test.asp" contains an API-like function, which is not authenticated. Using this function, an attacker can configure multiple settings without authentication.

Vulnerability class: Broken Authentication

Published 2022-03-30 · last modified 2026-07-09.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.055 (92.5th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 92.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.055 · newest: 0.055 · change: 0.000

Affected products

Totolink A3100r
Totolink A3100r Firmware — versions 5.9c.4577

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Broken Link)
hackmd.io/vS-OfUEzSqqKh8e1PKce5A (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-46006?: CVE-2021-46006 is a medium-severity vulnerability in Totolink A3100r, classified under Missing Authentication for Critical Function. CVSS score: 6.5/10. Published 2022-03-30.
How severe is CVE-2021-46006?: Medium severity. CVSS v3 base score is 6.5 out of 10.