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.
ACTIVELY EXPLOITED IN THE WILD
This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
Reolink RLC-410W IP Camera OS Command Injection Vulnerability
Reolink RLC-410W IP Camera
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.
12/18/2024
https://reolink.com/product-eol/ ; https://reolink.com/download-center/ ; https://nvd.nist.gov/vuln/detail/CVE-2021-40407
Vulnerability Summary
CVSS v3 Score
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v2 Score
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS Score (Exploitation Probability)
This vulnerability has a 25.28% probability of being exploited in the next 30 days, ranking higher than 96% of all scored CVEs.
CWE Classification
Related Vulnerabilities
Same Weakness Type(CWE-78)
A security vulnerability has been detected in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this issue is the function setPasswordCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. Such manipulation of the argument admpass leads to os command injection. The attack can be executed remotely. The exploit has been disclosed publicly and may be used.
A vulnerability was found in Totolink A7100RU 7.4cu.2313_b20191024. Affected by this vulnerability is the function setTracerouteCfg of the file /cgi-bin/cstecgi.cgi of the component CGI Handler. The manipulation of the argument command results in os command injection. The attack may be launched remotely. The exploit has been made public and could be used.
FileZen contains an OS command injection vulnerability. When FileZen Antivirus Check Option is enabled, a logged-in user may send a specially crafted HTTP request to execute an arbitrary OS command.
BeyondTrust Remote Support (RS) and certain older versions of Privileged Remote Access (PRA) contain a critical pre-authentication remote code execution vulnerability. By sending specially crafted requests, an unauthenticated remote attacker may be able to execute operating system commands in the context of the site user.
Sickbeard alpha contains a remote command injection vulnerability that allows unauthenticated attackers to execute arbitrary commands through the extra scripts configuration. Attackers can set malicious commands in the extra scripts field and trigger processing to execute remote code on the vulnerable Sickbeard installation.
Similar SeverityHIGH
Improper link resolution before file access ('link following') in Microsoft Defender allows an authorized attacker to elevate privileges locally.
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
An Improper Input Validation in Ivanti EPMM before versions 12.6.1.1, 12.7.0.1, and 12.8.0.1 allows a remotely authenticated user with administrative access to achieve remote code execution.
OpenClaw before 2026.4.22 contains a server-side request forgery vulnerability in the Zalo plugin's sendPhoto function that fails to validate outbound photo URLs through the SSRF guard. Attackers can bypass SSRF protection by providing malicious photo URLs to the Zalo Bot API, enabling unauthorized access to internal resources.
OpenClaw before 2026.4.22 contains an exec allowlist analysis vulnerability allowing shell expansion hiding in unquoted heredoc bodies. Attackers can bypass allowlist validation by embedding shell expansion tokens in heredoc bodies to execute unapproved commands at runtime.
Learn More
View this score breakdown or calculate a custom score
Learn how severity scores are calculated and what they mean
Best practices for deciding which vulnerabilities to address first
Essential guide to Common Vulnerabilities and Exposures
Understand how CVEs relate to underlying weakness types