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Vulnerability record · CVE-2021-40416 · published 28 January 2022

CVE-2021-40416: Reolink rlc-410w firmware improper access control vulnerability

Reolink · Rlc 410w Firmware

An incorrect default permission vulnerability exists in the cgiserver.cgi cgi_check_ability functionality of reolink RLC-410W v3.0.0.136_20121102. All the Get APIs that are not included in cgi_check_ability are already executable by any logged-in users. An attacker can send an HTTP request to trigger this vulnerability.

8.8 CVSS 3.1 High EPSS 0.87% · top 42.9% CWE-284 · Improper access controlCWE-276 · Incorrect default permissions
8.8CVSS 3.1 base score, v2 6.5
0.87%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

An incorrect default permission vulnerability exists in the cgiserver.cgi cgi_check_ability functionality of reolink RLC-410W v3.0.0.136_20121102. All the Get APIs that are not included in cgi_check_ability are already executable by any logged-in users. An attacker can send an HTTP request to trigger this vulnerability.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1425 ExploitTechnical DescriptionThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1425 ExploitTechnical DescriptionThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.2CVE-2021-40407Reolink RLC-410W camera DDNS domain OS command injectionThe Reolink RLC-410W firmware v3.0.0.136_20121102 fails to validate the ddns->domain value supplied through the SetDdns API, allowing OS command inje…KEVEPSS 48%analysed7.2CVE-2019-11001Reolink IP cameras OS command injection via TestEmailReolink RLC-410W, C1 Pro, C2 Pro, RLC-422W and RLC-511W devices through firmware 1.0.227 allow an authenticated admin to inject OS commands through t…KEVEPSS 38%analysed9.8CVE-2022-21217Reolink rlc-410w firmware out-of-bounds write vulnerabilityAn out-of-bounds write vulnerability exists in the device TestEmail functionality of reolink RLC-410W v3.0.0.136_20121102. A specially-crafted networ…EPSS 1.2%9.8CVE-2021-40408Reolink rlc-410w firmware os command injection vulnerabilityAn OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], bas…EPSS 3.7%9.8CVE-2021-40409Reolink rlc-410w firmware os command injection vulnerabilityAn OS command injection vulnerability exists in the device network settings functionality of reolink RLC-410W v3.0.0.136_20121102. At [1] or [2], bas…EPSS 3.7%8.2CVE-2022-21796Reolink rlc-410w firmware improper input validation vulnerabilityA memory corruption vulnerability exists in the netserver parse_command_list functionality of reolink RLC-410W v3.0.0.136_20121102. A specially-craft…EPSS 1.1%7.7CVE-2021-44413Reolink rlc-410w firmware improper input validation vulnerabilityA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A specially-…EPSS 1.2%7.7CVE-2021-44414Reolink rlc-410w firmware improper input validation vulnerabilityA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A specially-…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2021-40416), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.