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CVE-2021-40407

HIGH
7.2
CVSS Score
Published: January 28, 2022 at 07:10 PM UTC
Updated: June 17, 2026 at 04:06 AM UTC
2 products affected across 1 vendorRlc 410W FirmwareRlc-410W

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Severity
HIGH7.2
Exploitation
CISA KEV
Exploit prediction
EPSS 48%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score47.6%

EPSS (Exploit Prediction Scoring System) estimates a 47.6% chance this CVE is exploited in the wild within the next 30 days — higher than 99% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Reolink RLC-410W IP cameras contain an authenticated OS command injection vulnerability in the device network settings functionality.

Required Action
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.
Ransomware Use
Unknown
Added to KEV
Dec 18, 2024
Remediation Due
Jan 8, 2025
658 days overdue
Notes
https://reolink.com/product-eol/
https://reolink.com/download-center/
https://nvd.nist.gov/vuln/detail/CVE-2021-40407

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Rlc 410W Firmware· Reolink
95%
3.0.0.136_20121102
reolink-rlc-410w (same device)
Rlc-410W· Reolinkdevice
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424
US Government Resource
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-40407

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.2HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-78

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