CVE-2021-44401Public exploitNetwork attack vector

Authenticated camera reboot via non-object PtzCtrl parameter

Published Jan 28, 2022 · Updated Apr 15, 2025

Improper input validation in Reolink RLC-410W 3.0.0.136_20121102 allows remote authenticated users to reboot the camera via HTTP. The cgiserver.cgi PtzCtrl parser treats a string-valued JSON param as an object and invokes the JSON subscription operator, triggering an assertion. A valid low-privilege session is required; the failed CGI heartbeat causes the entire camera to reboot, interrupting video service.

CVSS severity7.7
High
EPSS probability1.21%
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 authenticated users to reboot the camera via HTTP. The cgiserver.cgi PtzCtrl parser treats a string-valued JSON param as an object and invokes the JSON subscription operator, triggering an assertion. A valid low-privilege session is required; the failed CGI heartbeat causes the entire camera to reboot, interrupting video service.

The record

CVE
CVE-2021-44401
Published
Jan 28, 2022
Updated
Apr 15, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 28, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.6Cisco TalosCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
7.7NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499.004Application or System Exploitation

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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