Reolink RLC-410W IP Camera OS Command Injection Vulnerability
n/a — n/a
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.
9.1
47.9%
Vector breakdown
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- High
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Published
- Jan 28, 2022
- Modified
- Oct 21, 2025
- Added to KEV
- Dec 18, 2024
- Federal patch due
- Jan 8, 2025
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.
Weakness classification
Proof-of-concept & exploitation references
Weaponization
Public repositories whose name or description references CVE-2021-40407, found via a live GitHub search at request time. These are community-sourced signals, not a verified working exploit - cross-check each one before relying on it, and treat higher star counts and recent activity as (weak) corroboration, not proof.
No public GitHub repositories referencing CVE-2021-40407 were found at last check. Absence here is not proof no exploit exists - see the references below for vendor advisories and write-ups.
References
Frequently asked questions
What is CVE-2021-40407?
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.
How severe is CVE-2021-40407?
CVE-2021-40407 has a CVSS base score of 9.1 out of 10 (CVSS 3.0).
Is CVE-2021-40407 actively exploited in the wild?
Yes. CVE-2021-40407 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added Dec 18, 2024, meaning CISA has confirmed evidence of active exploitation.
What is the EPSS score for CVE-2021-40407?
47.9% - meaning FIRST.org's EPSS model estimates a 47.9% probability this vulnerability will be exploited in the wild within 30 days (99% percentile among all scored CVEs).
What type of vulnerability is CVE-2021-40407?
CVE-2021-40407 is classified under CWE-78 (CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')).
Cross-checked against
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