Threats / Reolink / CVE-2021-40407
CVE-2021-40407
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Reolink RLC-410W IP Camera vulnerability
Reolink RLC-410W IP cameras contain an authenticated OS command injection vulnerability in network settings that allows execution of arbitrary commands on the device.
Verdict
Today item — known-exploited.
An authenticated attacker can inject OS commands through the network settings interface of affected Reolink RLC-410W cameras, potentially gaining full device control. This vulnerability has been exploited in the wild.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
1 independent public report of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2024-12-18).
Probability (EPSS)
EPSS 0.47915 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Reolink, RLC-410W IP Camera. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-78 OS Command Injection — weakness family: Injection.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I authenticate to the camera's web interface using valid credentials.
Business
Compromised camera credentials indicate either weak security practices or credential exposure within the organization.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I inject OS commands through the network settings functionality to execute arbitrary code on the device.
Business
The camera becomes a compromised endpoint within the network infrastructure, creating a persistent foothold.
3
Lateral reach — past segmentation narrative 3
Attacker
I establish command execution capability to pivot toward other network resources or establish persistence.
Business
The compromised camera can be weaponized for lateral movement, reconnaissance, or as part of a larger network compromise.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05