What is CVE-2021-44391?

CVE-2021-44391 is a high-severity vulnerability in Reolink Rlc-410w, classified under Improper Input Validation. CVSS score: 7.7/10. Published 2022-01-28.

How severe is CVE-2021-44391?

High severity. CVSS v3 base score is 7.7 out of 10.

Improper input validation in Reolink Rlc-410w

CVE-2021-44391

A denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A specially-crafted HTTP request can lead to a reboot. GetEnc param is not object. An attacker can send an HTTP request to trigger this vulnerability.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2022-01-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.012 (67.1th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.1% 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

Reolink Rlc-410w
Reolink Rlc-410w Firmware — versions 3.0.0.136_20121102

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

talosintelligence.com/vulnerability_reports/TALOS-2021-1421 (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-44391?: CVE-2021-44391 is a high-severity vulnerability in Reolink Rlc-410w, classified under Improper Input Validation. CVSS score: 7.7/10. Published 2022-01-28.
How severe is CVE-2021-44391?: High severity. CVSS v3 base score is 7.7 out of 10.