Security readout for executives and security teams
Plain-English summary
This flaw can let an unauthenticated network attacker reboot a vulnerable Reolink RLC-410W camera by sending a crafted HTTP request. The business impact is service disruption, not data theft. Internet-exposed or broadly reachable cameras are the main concern.
Executive priority
Prioritize remediation for internet-facing or security-critical cameras. The issue affects availability and could disrupt monitoring, so urgency depends on camera role and network exposure.
Technical view
CVE-2021-44379 is an input-validation denial-of-service issue in cgiserver.cgi JSON command parsing on Reolink RLC-410W v3.0.0.136_20121102. The source states a malformed SetAutoMaint parameter can trigger a reboot. CVSS is 8.6 due to network, low-complexity, unauthenticated availability impact.
Likely exposure
Exposure is likely limited to Reolink RLC-410W devices running the cited firmware and reachable over HTTP management interfaces, especially from the internet, guest networks, or untrusted internal segments.
Exploitation context
The CVE describes remote triggering by HTTP request, but the bundle does not cite active exploitation. CISA KEV status is false. Treat this as plausible disruption risk where vulnerable camera management endpoints are reachable.
Researcher notes
Evidence is strongest for the named model and firmware in the CVE description. The affected CPE data is incomplete in the bundle, and no patch details are provided here. Avoid broad product claims without vendor confirmation.
Mitigation direction
- Identify and isolate affected Reolink RLC-410W cameras from untrusted networks.
- Check Reolink and Talos guidance for fixed firmware or vendor-recommended mitigation.
- Restrict camera management access to trusted admin networks or VPN only.
- Disable unnecessary external exposure through firewall and router rules.
- Monitor affected cameras for unexpected reboots or availability loss.
Validation and detection
- Inventory camera model and firmware version against v3.0.0.136_20121102.
- Confirm whether cgiserver.cgi management access is reachable from untrusted networks.
- Review firewall, NAT, and remote access rules for exposed camera HTTP services.
- Check uptime and logs for unexplained reboot patterns.
- Track vendor advisories for patch status before declaring remediation complete.
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
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ATT&CK lookup starting points
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Open ATT&CK lookupCVE-2021-44379 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.