Vulnerability · CVE-2021-40407
Reolink RLC-410W IP Camera OS Command Injection Vulnerability
Published Jan 28, 2022 · catalog updated Jun 16, 2026 · Reolink RLC-410W IP Camera
Patch now
CVE-2021-40407 is in the CISA known-exploited catalog, due Jan 8, 2025. Confirm Reolink RLC-410W IP Camera against the vendor advisory and apply that fix. The CVSS score does not change the priority.
- Severity
- High7.2
- Known exploitation
- CISA KEV and VulnCheck KEV
- EPSS
- 47.63%
- Remediation
- Remediation guidance
- Affected products
- cpe reolink/rlc-410w firmware · vendor Reolink RLC-410W IP Camera
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.
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe reolink/rlc-410w firmware3.0.0.136_20121102
- vendor Reolink RLC-410W IP Cameraversion unspecified
How to fix CVE-2021-40407
Recommended remediation
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. CISA due date Jan 8, 2025.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
CVE-2021-40407 is in the CISA known-exploited catalog, due Jan 8, 2025. Confirm Reolink RLC-410W IP Camera against the vendor advisory and apply that fix. The CVSS score does not change the priority.
Which versions are affected?
Compare what you have installed with reolink/rlc-410w firmware 3.0.0.136_20121102. 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.
What should an analyst verify?
CWE-78: OS Command Injection. EPSS 47.63%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Jan 28, 2022 · Catalog
Detected
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 vulner
Dec 18, 2024 · CISA KEV
Known exploited
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.
Jan 8, 2025 · CISA KEV
Remediation due
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.
Jun 16, 2026 · Catalog
Updated
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 vulner
Sources
- CISA KEVConfirmed exploitationCVE-2021-40407
Reolink RLC-410W IP cameras contain an authenticated OS command injection vulnerability in the device network settings functionality.
cisa.gov - CVE.orgVulnerability recordCVE-2021-40407
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2021-40407
30-day exploitation probability 47.6%
first.org - NIST NVDVulnerability recordCVE-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 val
nvd.nist.gov - VulnCheck KEVConfirmed exploitationCVE-2021-40407
Reolink RLC-410W IP cameras contain an authenticated OS command injection vulnerability in the device network settings functionality.
vulncheck.com
References
Freshness
Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.