Is CVE-2021-40407 actively exploited?

CVE-2021-40407 has no public evidence of in-the-wild exploitation as of 2025-11-03.

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

CVE-2021-40407 has a CVSS score of 7.2 (HIGH severity). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2021-40407?

Patch guidance is available from reolink security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-40407.

Which products are affected by CVE-2021-40407?

1 product: reolink rlc-410w firmware.

Fix CVE-2021-40407 - HIGH reolink rlc-410w firmware

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.

CVSS Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: high
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-78 · OS Command Injection CWE-78 · OS Command Injection

Metadata

Primary Vendor: REOLINK
Published: 1/28/2022
Last Modified: 11/3/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2021-40407

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary