Security readout for executives and security teams
Plain-English summary
This vulnerability can let a remote attacker reboot an affected Reolink camera, causing loss of video availability. The public record identifies Reolink RLC-410W firmware v3.0.0.136_20121102. It is high urgency for sites relying on these cameras for monitoring, safety, or incident response continuity.
Executive priority
Prioritize remediation for security-sensitive sites where camera downtime affects safety, investigations, or compliance. If affected cameras are externally reachable, treat this as urgent availability risk. If isolated, schedule firmware validation and access-control hardening in the next maintenance cycle.
Technical view
CWE-20 input validation flaw in the cgiserver.cgi JSON command parser. The record says malformed handling of the TestFtp parameter can trigger a reboot via HTTP. CVSS 8.6 reflects network reachability, low complexity, no authentication, no user interaction, and high availability impact.
Likely exposure
Exposure is most likely where Reolink RLC-410W cameras on firmware v3.0.0.136_20121102 have reachable HTTP management interfaces. Internet-facing cameras or flat internal networks increase business risk. The CVE structured affected-product fields are incomplete, so validate against device inventory and vendor advisories.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. They do state an unauthenticated attacker can send an HTTP request that causes reboot. Treat exploitation as plausible where the camera interface is reachable, but do not claim observed attacks from this bundle.
Researcher notes
The source bundle names RLC-410W v3.0.0.136_20121102 in the description, while CVE affected fields are n/a. No patch version, workaround, or exploitation telemetry is included. Analysis should remain limited to denial of service through reboot, not confidentiality or integrity compromise.
Mitigation direction
- Check Reolink and Talos guidance for fixed firmware or official mitigation.
- Remove camera management interfaces from direct internet exposure.
- Restrict HTTP access to trusted administration networks only.
- Segment camera networks from business-critical systems.
- Monitor camera uptime and unexpected reboot patterns.
Validation and detection
- Inventory Reolink RLC-410W devices and record firmware versions.
- Identify any device running v3.0.0.136_20121102.
- Confirm HTTP management interfaces are not internet-reachable.
- Review network controls limiting access to camera CGI endpoints.
- Check operational logs for unexplained reboots or availability gaps.
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
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-2021-44408 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.