Security readout for executives and security teams
Plain-English summary
This CVE can let an unauthenticated remote attacker crash and reboot a named Reolink camera model by sending a malformed HTTP request. The impact is availability loss, not data theft or device takeover based on the supplied sources.
Executive priority
Treat as high priority for exposed or operationally important cameras. The business risk is surveillance or monitoring outage caused remotely, especially if cameras protect facilities or safety workflows.
Technical view
CVE-2021-44369 is a CWE-20 input validation flaw in cgiserver.cgi's JSON command parser for Reolink RLC-410W v3.0.0.136_20121102. The supplied description says a SetNtp parameter that is not an object can trigger a reboot via HTTP.
Likely exposure
Exposure is most likely where affected Reolink RLC-410W cameras or their web/API interface are reachable from untrusted networks. The structured affected-product fields are incomplete, so confirm model and firmware directly in asset inventory.
Exploitation context
The CVSS vector indicates network access, low complexity, no privileges, and no user interaction. CISA KEV is false in the bundle, and no supplied source states active exploitation.
Researcher notes
Evidence is limited to the CVE bundle and Talos reference. The affected structured data is incomplete, but the description names Reolink RLC-410W v3.0.0.136_20121102. No supplied source names a patch or confirms exploitation in the wild.
Mitigation direction
- Check Reolink and Talos guidance for firmware fixes or vendor mitigations.
- Remove camera web/API access from the public internet.
- Restrict access to trusted management networks or VPNs.
- Prioritize affected cameras supporting safety, physical security, or critical monitoring.
- Monitor for unexplained camera reboots or availability drops.
Validation and detection
- Inventory Reolink RLC-410W devices and record firmware versions.
- Confirm whether v3.0.0.136_20121102 is present.
- Identify whether cgiserver.cgi is reachable from untrusted networks.
- Review logs or monitoring for unexpected reboot patterns.
- Avoid crash testing outside an approved controlled lab.
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-2021-44369 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.