CVE-2021-40407
Reolink · exploited in the wild
- Published
- 28 January 2022
- Last modified
- 17 June 2026
- CVSS
- 7.2 v3.1
- Severity
- high
- EPSS
- 47.6% (99th pct)
- CISA KEV
- Added 18 December 2024 KEV
- NVD status
- Analyzed
- Weaknesses
- CWE-78
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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.
Exploitation
Added to the CISA Known Exploited Vulnerabilities catalogue on 18 December 2024, with a remediation due date of 8 January 2025 for US federal civilian agencies. CISA records no known ransomware campaign use.
Required action as published by CISA: 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 products
| Product | Vendor | Type | Versions named |
|---|---|---|---|
| RLC-410W | Reolink | unknown | 3.0.0.136_20121102, <= 1.0.227 |
References
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424 exploit
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424 exploit
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40407 government
Record assembled from NVD, CISA KEV 2026.09.04 and FIRST EPSS 2026-09-04. Affected products are those NVD's CPE configuration names that fall inside this site's scope; a CVE may affect products outside it.