Security readout for executives and security teams
Plain-English summary
CVE-2021-40412 is a critical command injection flaw in Reolink RLC-410W firmware v3.0.0.136_20121102. A highly privileged authenticated user could supply an unsafe device name through the SetDevName API, potentially causing the camera to run operating-system commands.
Executive priority
Prioritize remediation for affected cameras that are reachable from broad internal networks or the internet. High privileges are required, but successful abuse could compromise the camera host and affect confidentiality, integrity, and availability.
Technical view
The flaw is CWE-78 OS command injection in device network settings. The CVE states the devname variable, derived from the SetDevName API name parameter, is not properly validated. CVSS is 9.1 with network access, low complexity, high privileges required, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most relevant where Reolink RLC-410W devices running v3.0.0.136_20121102 are reachable over a network and administrative API access exists. The source bundle does not identify other affected products or versions.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no provided source states active exploitation. Public technical disclosure exists through Cisco Talos, so defenders should treat details as publicly known while avoiding assumptions about exploitation prevalence.
Researcher notes
Evidence is specific but incomplete: the CVE affected-product metadata is listed as n/a, while the description names Reolink RLC-410W v3.0.0.136_20121102. No patch details or active exploitation evidence are included in the supplied sources.
Mitigation direction
- Inventory Reolink RLC-410W devices and confirm firmware versions.
- Check Reolink and Talos guidance for fixed firmware or vendor mitigations.
- Restrict camera administration and API access to trusted management networks.
- Remove internet exposure for camera management interfaces.
- Review and tighten privileged account access on affected devices.
Validation and detection
- Confirm whether any device runs firmware v3.0.0.136_20121102.
- Verify management interfaces are not reachable from untrusted networks.
- Review device administration logs for unexpected configuration changes.
- Confirm vendor firmware status before marking the issue remediated.
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-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-40412 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
- Critical
- CVSS
- 9.1 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/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:H/UI:N/S:C/C:H/I:H/A:H2.36Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
9.1CriticalVector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1424CVE 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 Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.