HIGH CISA KEV

CVE-2021-40407

CVSS v3

7.2

HIGH

EPSS Score

32.6%

exploit probability

CISA KEV

Yes

known exploited

Exploitation

SSVC status

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 Known Exploited Vulnerability

Date Added
12/18/2024
Patch Due Date
1/8/2025
Ransomware Use
Unknown

Technical details

Published
1/28/2022

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.

Is CVE-2021-40407 actively exploited?

Yes. CVE-2021-40407 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 1/8/2025.

What is the CVSS score for CVE-2021-40407?

CVE-2021-40407 has a CVSS v3 base score of 7.2 (HIGH severity).

Is CVE-2021-40407 affecting your environment?

Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.