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

> CVE-2021-40407: Reolink RLC-410W IP Camera OS Command Injection Vulnerability . CVSS 9.1 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2021-40407
Last updated: 2025-10-21T23:15:48Z

- Published: 2022-01-28 19:10 UTC · Updated: 2025-10-21 23:15 UTC · Assigner: talos
- CVSS: 9.1 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- EPSS: 47.6%, 99th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2024-12-18, federal due date 2025-01-08, ransomware use: Unknown
- CWE: CWE-78

## 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.

## CISA 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.

## Affected vendors and products

- Reolink: RLC-410W IP Camera

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2021-40407)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2021-40407)
- [https://talosintelligence.com/vulnerability\_reports/TALOS-2021-1424](https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2021-40407 · Markdown: https://rewindex.com/cve/CVE-2021-40407.md · JSON: https://rewindex.com/api/v1/cves/CVE-2021-40407 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:00:27.054Z