CVEs / CVE-2021-40407

CVE-2021-40407: Reolink RLC-410W IP Camera OS Command Injection Vulnerability

Known exploited in the CISA KEV catalog since 18 Dec 2024
high 7.2 CVSS 3.1 (NVD)
EPSS 47.6% chance of exploitation in the next 30 days, higher than 98% of CVEs (30 Oct 2026)
Last changed at its sources 17 Jun 2026

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Summary

Reolink RLC-410W IP cameras contain an authenticated OS command injection vulnerability in the device network settings functionality.
CISA, Known Exploited Vulnerabilities catalog

Description

An OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], based on DDNS type, the ddns->domain variable, that has the value of the domain parameter provided through the SetDdns API, is not validated properly. This would lead to an OS command injection. An attacker can send an HTTP request to trigger this vulnerability.
The CVE record, via NVD · published 28 Jan 2022 · NVD status: Analyzed

Affected and fixed versions

As stated by the CVE record (from the CNA)
Product	Affected	Fixed in
n/a n/a	n/a	—

Exploitation

In CISA KEV since	18 Dec 2024
Due date for US federal agencies	8 Jan 2025
Used in ransomware campaigns	Unknown
Required action	The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization if a current mitigation is unavailable.

Severity

CVSS 3.1	7.2 high `CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H` Scored by NVD
Weakness	CWE-78

References

CVE-2021-40407 on NVD
CVE-2021-40407 in the CISA KEV catalog
https://reolink.com/product-eol/ (cited by CISA)
https://reolink.com/download-center/ (cited by CISA)
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424 Exploit, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40407 US Government Resource

Sources

Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.

This product uses data from the NVD API but is not endorsed or certified by the NVD.