Is CVE-2021-40415 actively exploited?

No active exploitation of CVE-2021-40415 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-40415 be exploited remotely?

Yes. CVE-2021-40415 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-40415?

CVE-2021-40415 has a CVSS score of 6.5 (MEDIUM).

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MEDIUM

CVE-2021-40415

CWE-284Published: January 28, 2022· Updated: Jun 17, 2026

6.5

CVSS v3.1

Official Description

An incorrect default permission vulnerability exists in the cgiserver.cgi cgi_check_ability functionality of reolink RLC-410W v3.0.0.136_20121102. In cgi_check_ability the Format API does not have a specific case, the user permission will default to 7. This will give non-administrative users the possibility to format the SD card and reboot the device.

NVD Source

Technical Analysis

CVE-2021-40415 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 6.5.