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Vulnerability record · CVE-2021-45533 · published 26 December 2021

CVE-2021-45533: Netgear ex6120 firmware command injection vulnerability

Netgear · Ex6120 Firmware

Certain NETGEAR devices are affected by command injection by an authenticated user. This affects EX6120 before 1.0.0.66, EX6130 before 1.0.0.46, EX7000 before 1.0.1.106, EX7500 before 1.0.1.76, EX3700 before 1.0.0.94, EX3800 before 1.0.0.94, RBR850 before 4.6.3.9, RBS850 before 4.6.3.9, and RBK852 before 4.6.3.9.

6.8 CVSS 3.1 Medium EPSS 0.63% · top 51.2% CWE-77 · Command injection
6.8CVSS 3.1 base score, v2 5.2
0.63%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 command injection by an authenticated user. This affects EX6120 before 1.0.0.66, EX6130 before 1.0.0.46, EX7000 before 1.0.1.106, EX7500 before 1.0.1.76, EX3700 before 1.0.0.94, EX3800 before 1.0.0.94, RBR850 before 4.6.3.9, RBS850 before 4.6.3.9, and RBK852 before 4.6.3.9.

CVSS:3.1/AV:A/AC:L/PR:H/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/000064458/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Extenders-and-WiFi- Vendor Advisory
https://kb.netgear.com/000064458/Security-Advisory-for-Post-Authentication-Command-Injection-on-Some-Extenders-and-WiFi- Vendor Advisory

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Related vulnerabilities

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

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-2021-45527Netgear rbk752 firmware classic buffer overflow vulnerabilityCertain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects D6220 before 1.0.0.68, D6400 before 1.0.0.102, D7000…EPSS 1.1%9.8CVE-2021-45512Netgear d7000 firmware broken cryptographic algorithm vulnerabilityCertain NETGEAR devices are affected by weak cryptography. This affects D7000v2 before 1.0.0.62, D8500 before 1.0.3.50, EX3700 before 1.0.0.84, EX380…EPSS 0.54%9.8CVE-2020-35796Netgear cbr40 firmware classic buffer overflow vulnerabilityCertain NETGEAR devices are affected by a buffer overflow by an unauthenticated attacker. This affects CBR40 before 2.5.0.10, D6220 before 1.0.0.60, …EPSS 1.3%9.8CVE-2018-21162Netgear d6400 firmware os command injection vulnerabilityCertain NETGEAR devices are affected by command injection by an unauthenticated attacker. This affects D6400 before 1.0.0.78, EX6200 before 1.0.3.86,…EPSS 3.4%9.8CVE-2018-21134Netgear r6700 firmware out-of-bounds write vulnerabilityCertain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects R6700 before 1.0.1.48, R7900 befor…EPSS 1.3%9.4CVE-2020-35800Netgear ac2100 firmware vulnerabilityCertain NETGEAR devices are affected by incorrect configuration of security settings. This affects AC2100 before 1.2.0.72, AC2400 before 1.2.0.72, AC…EPSS 1.6%8.8CVE-2021-34982Netgear dc112a firmware stack-based buffer overflow vulnerabilityNETGEAR Multiple Routers httpd Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers …EPSS 0.58%

Source: NIST National Vulnerability Database (record CVE-2021-45533), CISA KEV, FIRST EPSS (scores of 2026-10-11). This page is refreshed as NVD updates the record.