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Vulnerability record · CVE-2021-45643 · published 26 December 2021

CVE-2021-45643: Netgear r6400v2 firmware vulnerability

Netgear · R6400v2 Firmware

Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects R6400v2 before 1.0.4.118, R6700v3 before 1.0.4.118, and XR1000 before 1.0.0.58.

6.5 CVSS 3.1 Medium EPSS 0.48% · top 60.5%
6.5CVSS 3.1 base score, v2 3.3
0.48%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Certain NETGEAR devices are affected by incorrect configuration of security settings. This affects R6400v2 before 1.0.4.118, R6700v3 before 1.0.4.118, and XR1000 before 1.0.0.58.

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

Affected products

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

References

LinkTags
https://kb.netgear.com/000064159/Security-Advisory-for-Security-Misconfiguration-on-Some-Routers-PSV-2021-0035 PatchVendor Advisory
https://kb.netgear.com/000064159/Security-Advisory-for-Security-Misconfiguration-on-Some-Routers-PSV-2021-0035 PatchVendor Advisory

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Related vulnerabilities

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

9.8CVE-2023-36187Netgear cbr40 firmware classic buffer overflow vulnerabilityBuffer Overflow vulnerability in NETGEAR R6400v2 before version 1.0.4.118, allows remote unauthenticated attackers to execute arbitrary code via craf…EPSS 1.1%9.8CVE-2022-48196Netgear rax40 firmware classic buffer overflow vulnerabilityCertain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects RAX40 before 1.0.2.60, RAX35 before 1.0.2.60, …EPSS 0.94%9.8CVE-2021-45620Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 4.6.3.6, …EPSS 2.0%9.8CVE-2021-45614Netgear d7000v2 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D7000v2 before 1.0.0.74, LAX20 before 1.1.6.28…EPSS 2.0%9.8CVE-2021-45612Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 4.6.3.6, …EPSS 2.5%9.8CVE-2021-45608Netgear d7800 firmware integer overflow vulnerabilityCertain D-Link, Edimax, NETGEAR, TP-Link, Tenda, and Western Digital devices are affected by an integer overflow by an unauthenticated attacker. Remo…EPSS 2.5%9.8CVE-2021-45621Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, CBR750 before 3.2.18.2,…EPSS 2.0%9.8CVE-2021-45616Netgear cbr750 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR750 before 3.2.18.2, LAX20 before 1.1.6.28,…EPSS 2.0%

Source: NIST National Vulnerability Database (record CVE-2021-45643), CISA KEV, FIRST EPSS (scores of 2026-10-08). This page is refreshed as NVD updates the record.