What is CVE-2021-30166?

CVE-2021-30166 is a high-severity vulnerability in Meritlilin P2g1022, classified under OS Command Injection. CVSS score: 7.2/10. Published 2021-04-28.

How severe is CVE-2021-30166?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Meritlilin P2g1022

CVE-2021-30166

The NTP Server configuration function of the IP camera device is not verified with special parameters. Remote attackers can perform a command Injection attack and execute arbitrary commands after logging in with the privileged permission.

Vulnerability class: Command Injection (OS Command Injection)

Published 2021-04-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.038 (89.6th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.038 · newest: 0.038 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

www.twcert.org.tw/tw/cp-132-4676-391a5-1.html (Third Party Advisory)
www.meritlilin.com/assets/uploads/support/file/M00166-TW.pdf (Vendor Advisory)
gist.github.com/keniver/86ebef688fb274b534da51ef1a84dd3e (Third Party Advisory)
www.chtsecurity.com/news/0b733a38-e616-4ff3-86a6-13e710643388 (Third Party Advisory)

Frequently asked questions

What is CVE-2021-30166?: CVE-2021-30166 is a high-severity vulnerability in Meritlilin P2g1022, classified under OS Command Injection. CVSS score: 7.2/10. Published 2021-04-28.
How severe is CVE-2021-30166?: High severity. CVSS v3 base score is 7.2 out of 10.