Security readout for executives and security teams
Plain-English summary
This flaw could let an unauthenticated network attacker force an affected Reolink RLC-410W camera to accept an arbitrary firmware update. For executives, treat exposed cameras as high-risk because firmware control can undermine confidentiality, integrity, and availability.
Executive priority
Prioritize exposed or business-critical cameras first. A firmware update flaw can give an attacker durable control of a device, so remediation should be handled as an urgent infrastructure risk, not routine camera maintenance.
Technical view
CVE-2021-40419 affects the 'factory' binary in Reolink RLC-410W firmware v3.0.0.136_20121102. The CVSS 10.0 vector is network reachable, low complexity, no privileges, no user interaction, scope changed, and high impact to confidentiality, integrity, and availability.
Likely exposure
Exposure is most likely where Reolink RLC-410W cameras running v3.0.0.136_20121102 are reachable over untrusted networks. The provided affected metadata is incomplete, so validate by model and firmware version rather than relying on CPE matching.
Exploitation context
The source states a specially crafted series of network requests can trigger arbitrary firmware update. No provided source says this is in CISA KEV or actively exploited in the wild.
Researcher notes
The bundle names Reolink RLC-410W v3.0.0.136_20121102 and CWE-489, but affected product metadata is listed as n/a. Confidence is limited by sparse patch and mitigation details in the provided sources.
Mitigation direction
- Identify affected Reolink RLC-410W cameras and confirm exact firmware version.
- Check Reolink and Talos guidance for fixed firmware or vendor-approved remediation.
- Remove camera management and update services from internet exposure.
- Restrict access with network segmentation, firewall rules, and trusted administrative networks.
- Monitor for unexpected firmware update activity or configuration changes.
Validation and detection
- Inventory camera models and firmware versions across all sites.
- Confirm whether any affected cameras are reachable from untrusted networks.
- Review device logs or management records for unexpected firmware update events.
- Check asset scanners for Reolink RLC-410W and firmware v3.0.0.136_20121102.
- Track vendor advisory 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
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-489: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCVE-2021-40419 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
- 10 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:N/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:N/UI:N/S:C/C:H/I:H/A:H3.96Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
10CriticalVector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1428CVE 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.
Active Debug Code
Active Debug Code represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.