CVE-2021-44356Public exploitNetwork attack vector

Camera reboot via non-object SetAudioAlarm parameter

Published Apr 14, 2022 · Updated Apr 15, 2025

Improper input validation in Reolink RLC-410W 3.0.0.136_20121102 allows remote attackers to reboot the camera via HTTP. The SetAudioAlarm parameter parser treats a non-object JSON param value as an object, causing Json::Value::operator[] to assert and stop cgiserver.cgi heartbeats. No authentication or user interaction is required; the resulting service interruption is a camera reboot, not data access or modification.

CVSS severity8.6
High
EPSS probability1.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Reolink RLC-410W 3.0.0.136_20121102 allows remote attackers to reboot the camera via HTTP. The SetAudioAlarm parameter parser treats a non-object JSON param value as an object, causing Json::Value::operator[] to assert and stop cgiserver.cgi heartbeats. No authentication or user interaction is required; the resulting service interruption is a camera reboot, not data access or modification.

The record

CVE
CVE-2021-44356
Published
Apr 14, 2022
Updated
Apr 15, 2025
Vendor
Reolink
Product
RLC-410W
Classifications
CWE-20, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 14, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=v3.0.0.136_20121102

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Reolink · RLC-410Wversion=v3.0.0.136_20121102

Published CVSS scores

8.6Cisco TalosCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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