Security readout for executives and security teams
Plain-English summary
This vulnerability can make a vulnerable Reolink RLC-410W camera reboot when it receives malformed input to its web CGI interface. The business impact is service disruption: cameras may become temporarily unavailable, affecting monitoring coverage and incident visibility. The bundle does not name a confirmed patch or active exploitation.
Executive priority
Treat this as a high-priority availability risk for sites relying on affected cameras for security monitoring. The urgency is highest for exposed or remotely reachable devices. Prioritize inventory, access restriction, and vendor-firmware review; do not assume a patch exists unless confirmed by vendor guidance.
Technical view
CVE-2021-44364 is a high-severity CWE-20 input validation issue in cgiserver.cgi JSON command parsing on Reolink RLC-410W v3.0.0.136_20121102. The cited description says the SetWifi parameter is not an object, and a crafted HTTP request can trigger a reboot. CVSS 3.0 is 8.6, network-accessible, unauthenticated, no user interaction.
Likely exposure
Exposure is most relevant where affected Reolink RLC-410W cameras expose the HTTP management interface to untrusted networks. Internet-facing cameras, flat CCTV networks, and remote-management paths increase risk. The CVE affected-product metadata is incomplete, but the description names RLC-410W v3.0.0.136_20121102.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. Public technical reporting exists from Cisco Talos, so defenders should assume the issue is documented, but not treat exploitation as confirmed from these sources.
Researcher notes
The CVE data provides a clear vulnerability class and affected firmware string, but the affected CPE fields are not populated and no fix is named in the bundle. Avoid production proof testing with malformed requests unless formally authorized, because the expected impact is device reboot and monitoring disruption.
Mitigation direction
- Identify any Reolink RLC-410W cameras running v3.0.0.136_20121102.
- Check Reolink and Talos guidance for firmware updates or vendor-recommended mitigations.
- Remove camera HTTP management interfaces from internet exposure.
- Restrict camera administration to trusted management networks or VPN paths.
- Segment CCTV devices from business-critical networks.
- Monitor affected cameras for unexpected reboot or availability events.
Validation and detection
- Inventory camera model and firmware versions from asset records or management consoles.
- Verify whether HTTP management is reachable from untrusted networks.
- Confirm affected devices are not directly internet-facing.
- Review monitoring for unexplained camera reboot or downtime patterns.
- Check vendor guidance for available fixed firmware before remediation closure.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-20: Exact CWE lookup
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Open ATT&CK lookupCVE-2021-44364 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
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.