Security readout for executives and security teams
Plain-English summary
CVE-2021-38518 is a high-severity NETGEAR router and WiFi system issue where an already-authenticated user could inject operating-system commands. Successful abuse could compromise confidentiality, integrity, and availability on affected devices. The sources do not show confirmed active exploitation.
Executive priority
Prioritize remediation for affected NETGEAR devices used in business networks, remote offices, or executive home offices. The issue is high impact but requires authentication and adjacent access based on the provided CVSS vector.
Technical view
The CVE describes post-authentication command injection affecting NETGEAR RAX200, RAX75, RAX80 before 1.0.4.120 and RBK852, RBR850, RBS850 before 3.2.17.12. CVSS 3.1 is 8.4 with adjacent attack vector, high privileges required, no user interaction, changed scope, and high impact.
Likely exposure
Exposure is most relevant where listed NETGEAR devices run firmware below the fixed versions and authenticated management access is reachable from adjacent networks. Internet-wide exposure is not established by the provided sources.
Exploitation context
The source bundle states authenticated command injection and no CISA KEV listing. No cited source in the bundle confirms exploitation in the wild, public exploit availability, or unauthenticated attack paths.
Researcher notes
Evidence is limited to CVE metadata and the NETGEAR advisory reference. The bundle does not provide CWE classification, vulnerable parameter details, proof-of-concept status, or operational indicators. Avoid assuming broader model impact beyond the listed devices.
Mitigation direction
- Upgrade RAX200, RAX75, and RAX80 to firmware 1.0.4.120 or later.
- Upgrade RBK852, RBR850, and RBS850 to firmware 3.2.17.12 or later.
- Review NETGEAR advisory guidance before applying device-specific remediation.
- Limit management access to trusted administrators and trusted network segments.
- Replace unsupported devices if fixed firmware is unavailable.
Validation and detection
- Inventory NETGEAR RAX200, RAX75, RAX80, RBK852, RBR850, and RBS850 devices.
- Compare installed firmware against the affected version thresholds.
- Confirm management access is restricted to intended administrators.
- Check logs and configuration history for unexpected administrative changes.
- Document remediation status for each affected device.
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.
Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-38518 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
- 8.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:C/UI:N
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:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:C/UI:N1.76Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.4HighVector: CVSS:3.1/AC:L/AV:A/A:H/C:H/I:H/PR:H/S:C/UI:N
Source materials
- CVE List V5 sourceCVE List V5
- https://kb.netgear.com/000063783/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Routers-and-WiFi-Systems-PSV-2020-0528CVE 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.