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Vulnerability record · CVE-2021-45634 · published 26 December 2021

CVE-2021-45634: Netgear cbr750 firmware command injection vulnerability

Netgear · Cbr750 Firmware

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR750 before 4.6.3.6, RBK752 before 3.2.17.12, RBR750 before 3.2.17.12, RBS750 before 3.2.17.12, RBK852 before 3.2.17.12, RBR850 before 3.2.17.12, and RBS850 before 3.2.17.12.

8.8 CVSS 3.1 High EPSS 1.1% · top 36.4% CWE-77 · Command injection
8.8CVSS 3.1 base score, v2 5.8
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Certain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR750 before 4.6.3.6, RBK752 before 3.2.17.12, RBR750 before 3.2.17.12, RBS750 before 3.2.17.12, RBK852 before 3.2.17.12, RBR850 before 3.2.17.12, and RBS850 before 3.2.17.12.

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

Affected products

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

References

LinkTags
https://kb.netgear.com/000064139/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-WiFi-Systems-PSV-202 PatchVendor Advisory
https://kb.netgear.com/000064139/Security-Advisory-for-Pre-Authentication-Command-Injection-on-Some-WiFi-Systems-PSV-202 PatchVendor Advisory

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Related vulnerabilities

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

9.8CVE-2023-49007Netgear rbr750 firmware out-of-bounds write vulnerabilityIn Netgear Orbi RBR750 firmware before V7.2.6.21, there is a stack-based buffer overflow in /usr/sbin/httpd.EPSS 9.0%9.8CVE-2021-45627Netgear cbr750 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR750 before 4.6.3.6, RBK852 before 3.2.17.12…EPSS 1.7%9.8CVE-2021-45630Netgear 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 1.7%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-2021-45621Netgear 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-2021-45617Netgear cbr40 firmware command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects CBR40 before 2.5.0.24, EAX20 before 1.0.0.48, …EPSS 2.1%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%9.8CVE-2021-45613Netgear 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%

Source: NIST National Vulnerability Database (record CVE-2021-45634), CISA KEV, FIRST EPSS (scores of 2026-10-04). This page is refreshed as NVD updates the record.