What is CVE-2021-46010?

CVE-2021-46010 is a high-severity vulnerability in Totolink A3100r, classified under Use of Insufficiently Random Values. CVSS score: 8.8/10. Published 2022-03-30.

How severe is CVE-2021-46010?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Totolink A3100r

CVE-2021-46010

Totolink A3100R V5.9c.4577 suffers from Use of Insufficiently Random Values via the web configuration. The SESSION_ID is predictable. An attacker can hijack a valid session and conduct further malicious operations.

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

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.012 (68.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 68.0% 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

Totolink A3100r
Totolink A3100r Firmware — versions 5.9c.4577

Weakness classification (CWE)

CWE-330 — Use of Insufficiently Random Values

References

af854a3a-2127-422b-91ae-364da2661108 (Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Broken Link)
hackmd.io/Ynwm8NnQSiK0xm7QKuNteg (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-46010?: CVE-2021-46010 is a high-severity vulnerability in Totolink A3100r, classified under Use of Insufficiently Random Values. CVSS score: 8.8/10. Published 2022-03-30.
How severe is CVE-2021-46010?: High severity. CVSS v3 base score is 8.8 out of 10.