Security readout for executives and security teams
Plain-English summary
A low-privileged user on an affected Reolink RLC-410W camera can perform administrator-like actions that format the SD card and reboot the device. For organizations relying on camera footage, this creates evidence loss and device availability risk, not direct data theft based on the supplied sources.
Executive priority
Prioritize remediation where cameras protect sensitive sites, investigations, safety operations, or regulated evidence retention. Business risk is footage destruction and device disruption by a low-privileged user.
Technical view
CVE-2021-40415 is a CWE-284 incorrect default permission issue in cgiserver.cgi cgi_check_ability on Reolink RLC-410W v3.0.0.136_20121102. The Format API lacks a specific permission case, so permissions default to 7, allowing non-administrative users to format SD storage and reboot the camera. CVSS 3.0 score is 7.1.
Likely exposure
Exposure is limited to environments running Reolink RLC-410W v3.0.0.136_20121102, especially where non-admin accounts exist and camera management endpoints are network-reachable.
Exploitation context
The bundle does not show CISA KEV listing or other evidence of active exploitation. CVSS indicates network access, low privileges, no user interaction, low integrity impact, and high availability impact.
Researcher notes
The CVE metadata affected section is marked n/a, but the description and Talos reference identify Reolink RLC-410W v3.0.0.136_20121102. No patch details are included in the supplied bundle, so do not assume a fixed version without vendor confirmation.
Mitigation direction
- Check Reolink guidance for fixed firmware or official mitigation instructions.
- Restrict camera management access to trusted networks or VPNs.
- Remove unnecessary non-administrator camera accounts.
- Apply least-privilege review to all camera users.
- Preserve critical footage off-device where operationally required.
Validation and detection
- Inventory Reolink RLC-410W devices and firmware versions.
- Identify cameras running v3.0.0.136_20121102.
- Review non-admin accounts with camera access.
- Confirm management interfaces are not broadly reachable.
- Check for unexpected SD card format or reboot events.
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-284: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2021-40415 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
- 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.