CISA KEV source record / CVE-2021-40407

Reolink RLC-410W IP Camera OS Command Injection Vulnerability

Reolink / RLC-410W IP Camera

Known exploitation catalogNot a Secureline discoveryNot a live alert

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

CVE identifier
CVE-2021-40407
Added to KEV
Dec 18, 2024
CISA catalog dueDate
Jan 8, 2025

The dates above are catalog fields. The addition date does not establish when the vulnerability was discovered or first exploited. Confirm which requirements apply to your organisation separately.

Publisher's 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.

This wording is attributed to the CISA snapshot. Verify current vendor guidance, affected versions and your deployment before applying changes.

Keep the signals separate.

Ransomware use, as reported by CISA
Unknown
CVSS severity
Not supplied by KEV
EPSS probability
47.63%

EPSS score date: 2026-09-27T12:00:21Z. Percentile: 98.81%. Model version: v2026.06.15.

A dated estimate of exploitation probability over the following 30 days, not a severity score or a probability of a breach in your environment.

Inspect the EPSS source ↗

“Unknown” ransomware use is an unknown source field, not proof that ransomware activity has not occurred.

Source notes

https://reolink.com/product-eol/ ; https://reolink.com/download-center/ ; https://nvd.nist.gov/vuln/detail/CVE-2021-40407

Source & freshness

Catalog version 2026.09.27
Source updated: Sep 27, 2026, 9:30 PM UTC
Successfully checked: Sep 27, 2026, 11:50 PM UTC
This snapshot is older than 36 hours. Check current publisher guidance.

Automated source record, not an editorial advisory or an independent discovery. No affected or fixed version is inferred, and no organisation-specific risk rating is generated.