CVE-2021-38515:Denial of Service Vulnerability in Multiple NETGEAR Router Models

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CVE-2021-38515 affects certain NETGEAR router models including R6400v2, R6700v3, R7900, and R8000. The vulnerability allows attackers to cause a denial of service condition, potentially making the router unresponsive or causing service disruptions. This issue affects R6400v2 versions before 1.0.4.98, R6700v3 versions before 1.0.4.98, R7900 versions before 1.0.3.18, and R8000 versions before 1.0.4.46.

Overview

This vulnerability (PSV-2019-0082) is a denial of service issue affecting multiple NETGEAR router models. When exploited, an attacker could potentially disrupt the normal operation of the affected routers, causing them to become unresponsive or crash. This could lead to network outages and loss of internet connectivity for users of these devices. The vulnerability exists in the firmware of the affected devices and requires updating to patched versions to mitigate the risk.

Remediation

Users of affected NETGEAR router models should update their firmware to the following versions or later:

  • R6400v2: Update to firmware version 1.0.4.98 or later
  • R6700v3: Update to firmware version 1.0.4.98 or later
  • R7900: Update to firmware version 1.0.3.18 or later
  • R8000: Update to firmware version 1.0.4.46 or later

Firmware updates can be downloaded from the NETGEAR support website or through the router's administrative interface. After updating, it is recommended to reboot the device and ensure that all settings are properly configured.

References

  • NETGEAR Security Advisory: https://kb.netgear.com/000063768/Security-Advisory-for-Denial-of-Service-on-Some-Routers-PSV-2019-0082
  • MITRE CVE Entry: CVE-2021-38515
  • Affected Products: NETGEAR R6400v2, R6700v3, R7900, and R8000 routers

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Accommodation & Food Services
    Accommodation & Food Services
  2. Administrative, Support, Waste Management & Remediation Services
    Administrative, Support, Waste Management & Remediation Services
  3. Agriculture, Forestry Fishing & Hunting
    Agriculture, Forestry Fishing & Hunting
  4. Arts, Entertainment & Recreation
    Arts, Entertainment & Recreation
  5. Construction
    Construction
  6. Educational Services
    Educational Services
  7. Finance and Insurance
    Finance and Insurance
  8. Health Care & Social Assistance
    Health Care & Social Assistance
  9. Information
    Information
  10. Management of Companies & Enterprises
    Management of Companies & Enterprises
  11. Manufacturing
    Manufacturing
  12. Mining
    Mining
  13. Other Services (except Public Administration)
    Other Services (except Public Administration)
  14. Professional, Scientific, & Technical Services
    Professional, Scientific, & Technical Services
  15. Public Administration
    Public Administration
  16. Real Estate Rental & Leasing
    Real Estate Rental & Leasing
  17. Retail Trade
    Retail Trade
  18. Transportation & Warehousing
    Transportation & Warehousing
  19. Utilities
    Utilities
  20. Wholesale Trade
    Wholesale Trade

Focus on What Matters

  1. See Everything.
  2. Identify True Risk.
  3. Proactively Mitigate Threats.

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