Security readout for executives and security teams
Plain-English summary
A low-privileged user on an affected Reolink RLC-410W camera can change motion detection settings because one API permission defaults too broadly. This could reduce or disable detection coverage, undermining camera monitoring without requiring administrator access.
Executive priority
Treat this as a targeted camera integrity and monitoring reliability risk. Prioritize sites where these cameras protect sensitive areas or where non-admin users can access camera management.
Technical view
CVE-2021-40414 is an incorrect default permission issue in cgiserver.cgi cgi_check_ability for SetMdAlarm on Reolink RLC-410W v3.0.0.136_20121102. The missing specific case defaults permission to 7, allowing non-admin authenticated users to alter motion detection parameters. CVSS is 7.1.
Likely exposure
Exposure is most relevant where affected Reolink RLC-410W cameras are reachable over the network and have non-administrator user accounts. The source bundle identifies one firmware version, v3.0.0.136_20121102; it does not prove broader product or version impact.
Exploitation context
The CVSS vector indicates network access, low complexity, low privileges, and no user interaction. The CVE is not listed as KEV in the provided bundle, and no cited source here supports active exploitation.
Researcher notes
The provided affected CPE data is empty, but the description names Reolink RLC-410W v3.0.0.136_20121102. Do not infer other models or firmware versions without vendor or Talos confirmation.
Mitigation direction
- Check Reolink and Talos guidance for firmware updates or vendor-approved remediation.
- Restrict camera management interfaces to trusted admin networks or VPN access.
- Review and remove unnecessary non-administrator camera accounts.
- Use least privilege and unique credentials for remaining camera users.
- Monitor motion detection setting changes for unexpected modifications.
Validation and detection
- Inventory Reolink RLC-410W cameras and record firmware versions.
- Identify whether firmware v3.0.0.136_20121102 is present.
- Review account roles on affected cameras for non-admin users.
- Confirm motion detection settings have not changed unexpectedly.
- Document compensating controls around camera management access.
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-284: Authorization and privilege behavior lookup
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Open ATT&CK lookupCVE-2021-40414 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.1 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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:L/UI:N/S:U/C:N/I:L/A:H2.84.2Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
7.1HighVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1425CVE 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 Access Control
Improper Access Control represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.