Security readout for executives and security teams
Plain-English summary
This flaw lets an unauthenticated network attacker crash and reboot a specific Reolink RLC-410W camera firmware by sending malformed HTTP input to its CGI JSON parser. The business risk is camera downtime and monitoring gaps, not data theft. Public sources do not show active exploitation or a confirmed fixed version in the provided bundle.
Executive priority
Treat as a high-priority resilience issue for camera fleets. Prioritize exposed surveillance sites and environments where camera downtime affects safety, compliance, or physical security operations.
Technical view
CVE-2021-44412 is a CWE-20 input-validation issue in cgiserver.cgi JSON command parsing on Reolink RLC-410W v3.0.0.136_20121102. The source describes a non-object GetRec parameter causing a reboot. CVSS 3.0 is 8.6: network reachable, low complexity, no privileges, no user interaction, high availability impact.
Likely exposure
Exposure is most likely where affected Reolink RLC-410W cameras expose their HTTP management interface to untrusted networks. The provided CVE affected-product metadata is incomplete, so validate by model and firmware rather than CPE matching alone.
Exploitation context
The bundle does not identify CISA KEV listing or active exploitation. The issue is remotely reachable and unauthenticated according to CVSS and the CVE description, so internet-exposed or flat-network cameras carry higher operational risk.
Researcher notes
Evidence is narrow but clear for one firmware build. The source bundle lacks affected CPEs, patch identifiers, and exploit-in-the-wild evidence. Do not generalize to all Reolink models without vendor confirmation.
Mitigation direction
- Check Reolink and Talos guidance for fixed firmware or official mitigations.
- Remove camera management interfaces from the public internet.
- Restrict HTTP access to trusted admin networks or VPN users.
- Segment cameras from business-critical networks.
- Monitor affected cameras for unexpected reboot patterns.
Validation and detection
- Inventory Reolink RLC-410W devices and firmware versions.
- Confirm whether v3.0.0.136_20121102 is present.
- Review firewall rules for exposed camera HTTP services.
- Check device uptime and logs for unexplained reboots.
- Track vendor advisories for patched firmware confirmation.
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-2021-44412 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.