Vulnerability Monitor

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CVE-2018-21093

Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects D8500 before 1.0.3.42, EX3700 before 1.0.0.70, EX3800 before 1.0.0.70, EX6000 before 1.0.0.30, EX6100 before 1.0.2.24, EX6120 before 1.0.0.40, EX6130 before 1.0.0.22, EX6150 before 1.0.0.42, EX6200 before 1.0.3.88, EX7000 before 1.0.0.66, R6250 before 1.0.4.26, R6300-2CXNAS before 1.0.3.60, R6300v2 before 1.0.4.28, R6400 before 1.0.1.36, R6400v2 before 1.0.2.52, R6700 before 1.0.1.46, R6900 before 1.0.1.46, R7000 before 1.0.9.28, R7000P before 1.3.1.44, R6900P before 1.3.1.44, R7100LG before 1.0.0.46, R7300 before 1.0.0.68, R7900 before 1.0.2.10, R8000 before 1.0.4.18, R8000P before 1.3.0.10, R7900P before 1.3.0.10, R8500 before 1.0.2.122, R8300 before 1.0.2.122, RBW30 before 2.1.2.6, WN2500RPv2 before 1.0.0.54, and WNR3500Lv2 before 1.2.0.56.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 8.8, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 60 products from netgear, from netgear, from netgear and 57 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-04-27T15:15:12.080

Last Modified

2024-11-21T04:02:53.023

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.8 (HIGH)

CVSSv2 Vector

AV:A/AC:L/Au:N/C:P/I:P/A:P

  • Access Vector: ADJACENT_NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

6.5

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System netgear d8500_firmware < 1.0.3.42 Yes
Hardware netgear d8500 - No
Operating System netgear ex3700_firmware < 1.0.0.70 Yes
Hardware netgear ex3700 - No
Operating System netgear ex3800_firmware < 1.0.0.70 Yes
Hardware netgear ex3800 - No
Operating System netgear ex6000_firmware < 1.0.0.30 Yes
Hardware netgear ex6000 - No
Operating System netgear ex6100_firmware < 1.0.2.24 Yes
Hardware netgear ex6100 - No
Operating System netgear ex6120_firmware < 1.0.0.40 Yes
Hardware netgear ex6120 - No
Operating System netgear ex6130_firmware < 1.0.0.22 Yes
Hardware netgear ex6130 - No
Operating System netgear ex6150_firmware < 1.0.0.42 Yes
Hardware netgear ex6150 - No
Operating System netgear ex6200_firmware < 1.0.3.88 Yes
Hardware netgear ex6200 - No
Operating System netgear ex7000_firmware < 1.0.0.66 Yes
Hardware netgear ex7000 - No
Operating System netgear r6250_firmware < 1.0.4.26 Yes
Hardware netgear r6250 - No
Operating System netgear r6300-2cxnas_firmware < 1.0.3.60 Yes
Hardware netgear r6300-2cxnas - No
Operating System netgear r6300_firmware < 1.0.4.28 Yes
Hardware netgear r6300 v2 No
Operating System netgear r6400_firmware < 1.0.1.36 Yes
Hardware netgear r6400 - No
Operating System netgear r6400_firmware < 1.0.2.52 Yes
Hardware netgear r6400 v2 No
Operating System netgear r6700_firmware < 1.0.1.46 Yes
Hardware netgear r6700 - No
Operating System netgear r6900_firmware < 1.0.1.46 Yes
Hardware netgear r6900 - No
Operating System netgear r7000_firmware < 1.0.9.28 Yes
Hardware netgear r7000 - No
Operating System netgear r7000p_firmware < 1.3.1.44 Yes
Hardware netgear r7000p - No
Operating System netgear r6900p_firmware < 1.3.1.44 Yes
Hardware netgear r6900p - No
Operating System netgear r7100lg_firmware < 1.0.0.46 Yes
Hardware netgear r7100lg - No
Operating System netgear r7300_firmware < 1.0.0.68 Yes
Hardware netgear r7300 - No
Operating System netgear r7900_firmware < 1.0.2.10 Yes
Hardware netgear r7900 - No
Operating System netgear r8000_firmware < 1.0.4.18 Yes
Hardware netgear r8000 - No
Operating System netgear r8000p_firmware < 1.3.0.10 Yes
Hardware netgear r8000p - No
Operating System netgear r7900p_firmware < 1.3.0.10 Yes
Hardware netgear r7900p - No
Operating System netgear r8500_firmware < 1.0.2.122 Yes
Hardware netgear r8500 - No
Operating System netgear r8300_firmware < 1.0.2.122 Yes
Hardware netgear r8300 - No
Operating System netgear rbw30_firmware < 2.1.2.6 Yes
Hardware netgear rbw30 - No
Operating System netgear wn2500rp_firmware < 1.0.0.54 Yes
Hardware netgear wn2500rp v2 No
Operating System netgear wnr3500l_firmware < 1.2.0.56 Yes
Hardware netgear wnr3500l v2 No
References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For netgear's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.