What is CVE-2021-3616?

CVE-2021-3616 is a critical-severity vulnerability in Lenovo Smart Camera C2e, classified under Improper Authorization. CVSS score: 9.4/10. Published 2021-08-17.

How severe is CVE-2021-3616?

Critical severity. CVSS v3 base score is 9.4 out of 10.

Auth bypass in Lenovo Smart Camera C2e

CVE-2021-3616

A vulnerability was reported in Lenovo Smart Camera X3, X5, and C2E that could allow an unauthorized user to view device information, alter firmware content and device configuration. This vulnerability is the same as CNVD-2020-68651.

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

CVSS v3 metric

CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H.

EPSS exploit prediction

EPSS: 0.009 (58.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

iknow.lenovo.com.cn/detail/dc_198417.html (Vendor Advisory)
www.cnvd.org.cn/flaw/show/CNVD-2020-68651 (Not Applicable)

Frequently asked questions

What is CVE-2021-3616?: CVE-2021-3616 is a critical-severity vulnerability in Lenovo Smart Camera C2e, classified under Improper Authorization. CVSS score: 9.4/10. Published 2021-08-17.
How severe is CVE-2021-3616?: Critical severity. CVSS v3 base score is 9.4 out of 10.