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Vulnerability record · CVE-2018-21214 · published 28 April 2020

CVE-2018-21214: Netgear r9000 firmware classic buffer overflow vulnerability

Netgear · R9000 Firmware

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D3600 before 1.0.0.67, D6000 before 1.0.0.67, EX2700 before 1.0.1.28, R6100 before 1.0.1.20, R7500v2 before 1.0.3.24, R9000 before 1.0.2.52, WN2000RPTv3 before 1.0.1.20, WN3000RPv3 before 1.0.2.50, and WN3100RPv2 before 1.0.0.56.

8.8 CVSS 3.1 High EPSS 0.73% · top 47.8% CWE-120 · Classic buffer overflow
8.8CVSS 3.1 base score, v2 5.8
0.73%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Certain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects D3600 before 1.0.0.67, D6000 before 1.0.0.67, EX2700 before 1.0.1.28, R6100 before 1.0.1.20, R7500v2 before 1.0.3.24, R9000 before 1.0.2.52, WN2000RPTv3 before 1.0.1.20, WN3000RPv3 before 1.0.2.50, and WN3100RPv2 before 1.0.0.56.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://kb.netgear.com/000055123/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-Gateways-and-E Vendor Advisory
https://kb.netgear.com/000055123/Security-Advisory-for-Pre-Authentication-Buffer-Overflow-on-Some-Routers-Gateways-and-E Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-21214), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.