Security readout for executives and security teams
Plain-English summary
A malformed HTTP request can cause an affected Reolink RLC-410W camera to reboot. The business impact is loss or interruption of video surveillance, not evidence of data theft. The provided sources identify one firmware version and do not confirm broader product impact or active exploitation.
Executive priority
Treat as high priority where cameras support security, safety, or compliance operations. The main risk is avoidable surveillance downtime from unauthenticated network traffic. Address internet exposure first, then firmware and segmentation.
Technical view
CVE-2021-44370 is a denial-of-service issue in the cgiserver.cgi JSON command parser for Reolink RLC-410W v3.0.0.136_20121102. Improper input validation, specifically a SetFtp parameter that is not an object, can trigger a reboot through a crafted HTTP request. CVSS is 8.6 high.
Likely exposure
Likely exposure is limited to organizations running Reolink RLC-410W firmware v3.0.0.136_20121102, especially where the camera HTTP interface is reachable from untrusted networks. Evidence for other Reolink models or versions is incomplete in the provided sources.
Exploitation context
The CVE description states an attacker can send an HTTP request to trigger a reboot. The record is not marked as CISA KEV, and the provided sources do not state that this vulnerability is actively exploited in the wild.
Researcher notes
The available evidence points to CWE-20 improper input validation in cgiserver.cgi JSON parsing. Impact is availability only per the CVSS vector. Public source detail names the SetFtp parameter condition but does not provide a confirmed patch version in the supplied bundle.
Mitigation direction
- Inventory Reolink RLC-410W cameras and record firmware versions.
- Check Reolink or Talos guidance for fixed firmware or vendor mitigation.
- Restrict camera HTTP access to trusted management networks only.
- Block direct internet exposure for affected camera interfaces.
- Segment surveillance devices from user and business networks.
- Monitor affected cameras for unexpected reboot patterns.
Validation and detection
- Confirm whether any camera runs firmware v3.0.0.136_20121102.
- Review firewall and router rules for exposed camera HTTP interfaces.
- Check asset records for Reolink RLC-410W deployments.
- Review uptime and device logs for unexplained reboots.
- Validate remediation through vendor-supported version checks.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
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CWE-20: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-44370 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 8.6 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H3.94Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
8.6HighVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1421CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Input Validation
Improper Input Validation represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.