Vulnerability Monitor

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CVE-2021-34982

NETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. When parsing the strings file, the process does not properly validate the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. . Was ZDI-CAN-13709.

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 104 products from netgear, from netgear, from netgear and 101 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2024, 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

2024-05-07T23:15:13.400

Last Modified

2025-08-14T01:41:19.343

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.0: 8.8 (HIGH)

Weaknesses
  • Type: Secondary
    CWE-121
  • Type: Primary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System netgear dc112a_firmware < 1.0.0.62 Yes
Hardware netgear dc112a - No
Operating System netgear ex3700_firmware < 1.0.0.94 Yes
Hardware netgear ex3700 - No
Operating System netgear ex3800_firmware < 1.0.0.94 Yes
Hardware netgear ex3800 - No
Operating System netgear ex6120_firmware < 1.0.0.66 Yes
Hardware netgear ex6120 - No
Operating System netgear ex6130_firmware < 1.0.0.46 Yes
Hardware netgear ex6130 - No
Operating System netgear ex7000_firmware < 1.0.1.106 Yes
Hardware netgear ex7000 - No
Operating System netgear ex7500_firmware < 1.0.1.76 Yes
Hardware netgear ex7500 - No
Operating System netgear mr60_firmware < 1.1.6.122 Yes
Hardware netgear mr60 - No
Operating System netgear mr80_firmware < 1.1.6.10 Yes
Hardware netgear mr80 - No
Operating System netgear ms60_firmware < 1.1.6.122 Yes
Hardware netgear ms60 - No
Operating System netgear ms80_firmware < 1.1.6.10 Yes
Hardware netgear ms80 - No
Operating System netgear lax20_firmware < 1.1.6.30 Yes
Hardware netgear lax20 - No
Operating System netgear r6400_firmware < 1.0.1.76 Yes
Hardware netgear r6400 - No
Operating System netgear r6400v2_firmware < 1.0.4.120 Yes
Hardware netgear r6400v2 - No
Operating System netgear r6700v3_firmware < 1.0.4.120 Yes
Hardware netgear r6700v3 - No
Operating System netgear r6900p_firmware < 1.3.3.148 Yes
Hardware netgear r6900p - No
Operating System netgear r7000_firmware < 1.0.11.128 Yes
Hardware netgear r7000 - No
Operating System netgear r7000p_firmware < 1.3.3.148 Yes
Hardware netgear r7000p - No
Operating System netgear r7100lg_firmware < 1.0.0.72 Yes
Hardware netgear r7100lg - No
Operating System netgear r7850_firmware < 1.0.5.76 Yes
Hardware netgear r7850 - No
Operating System netgear r7900p_firmware < 1.4.2.84 Yes
Hardware netgear r7900p - No
Operating System netgear r7960p_firmware < 1.4.2.84 Yes
Hardware netgear r7960p - No
Operating System netgear r8000_firmware < 1.0.4.76 Yes
Hardware netgear r8000 - No
Operating System netgear r8000p_firmware < 1.4.2.84 Yes
Hardware netgear r8000p - No
Operating System netgear r8300_firmware < 1.0.2.156 Yes
Hardware netgear r8300 - No
Operating System netgear r8500_firmware < 1.0.2.156 Yes
Hardware netgear r8500 - No
Operating System netgear rax15_firmware < 1.0.4.100 Yes
Hardware netgear rax15 - No
Operating System netgear rax20_firmware < 1.0.4.100 Yes
Hardware netgear rax20 - No
Operating System netgear rax200_firmware < 1.0.5.132 Yes
Hardware netgear rax200 - No
Operating System netgear rax35v2_firmware < 1.0.4.100 Yes
Hardware netgear rax35v2 - No
Operating System netgear rax38v2_firmware < 1.0.4.100 Yes
Hardware netgear rax38v2 - No
Operating System netgear rax40v2_firmware < 1.0.4.100 Yes
Hardware netgear rax40v2 - No
Operating System netgear rax42_firmware < 1.0.4.100 Yes
Hardware netgear rax42 - No
Operating System netgear rax43_firmware < 1.0.4.100 Yes
Hardware netgear rax43 - No
Operating System netgear rax45_firmware < 1.0.4.100 Yes
Hardware netgear rax45 - No
Operating System netgear rax48_firmware < 1.0.4.100 Yes
Hardware netgear rax48 - No
Operating System netgear rax50_firmware < 1.0.4.100 Yes
Hardware netgear rax50 - No
Operating System netgear rax50s_firmware < 1.0.4.100 Yes
Hardware netgear rax50s - No
Operating System netgear rax75_firmware < 1.0.5.132 Yes
Hardware netgear rax75 - No
Operating System netgear rax80_firmware < 1.0.5.132 Yes
Hardware netgear rax80 - No
Operating System netgear raxe450_firmware < 1.0.8.70 Yes
Hardware netgear raxe450 - No
Operating System netgear raxe500_firmware < 1.0.8.70 Yes
Hardware netgear raxe500 - No
Operating System netgear rs400_firmware < 1.5.1.80 Yes
Hardware netgear rs400 - No
Operating System netgear wndr3400v3_firmware < 1.0.1.42 Yes
Hardware netgear wndr3400v3 - No
Operating System netgear wnr3500lv2_firmware < 1.2.0.70 Yes
Hardware netgear wnr3500lv2 - No
Operating System netgear xr1000_firmware < 1.0.0.64 Yes
Hardware netgear xr1000 - No
Operating System netgear xr300_firmware < 1.0.3.68 Yes
Hardware netgear xr300 - No
Operating System netgear d6220_firmware < 1.0.0.76 Yes
Hardware netgear d6220 - No
Operating System netgear d6400_firmware < 1.0.0.108 Yes
Hardware netgear d6400 - No
Operating System netgear d7000v2_firmware < 1.0.0.76 Yes
Hardware netgear d7000v2 - No
Operating System netgear dgn2200v4_firmware < 1.0.0.126 Yes
Hardware netgear dgn2200v4 - No
Operating System netgear v6510-1fxaus_firmware < 1.0.0.80 Yes
Hardware netgear v6510-1fxaus - 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.