CVE-2021-45620
9.6 · CRITICALOverview
CVE-2021-45620 is a critical-severity vulnerability affecting netgear cbr40_firmware. It was published on December 26, 2021 and has a CVSS 3.1 base score of 9.6 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
Certain 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, EAX20 before 1.0.0.58, EAX80 before 1.0.1.68, LAX20 before 1.1.6.28, MR60 before 1.0.6.116, MR80 before 1.1.2.20, MS60 before 1.0.6.116, MS80 before 1.1.2.20, MK62 before 1.0.6.116, MK83 before 1.1.2.20, R6400 before 1.0.1.70, R6400v2 before 1.0.4.106, R6700v3 before 1.0.4.106, R6900P before 1.3.3.140, R7000 before 1.0.11.126, R7000P before 1.3.3.140, R7850 before 1.0.5.74, R7900 before 1.0.4.46, R7900P before 1.4.2.84, R7960P before 1.4.2.84, R8000 before 1.0.4.74, R8000P before 1.4.2.84, RAX15 before 1.0.3.96, RAX20 before 1.0.3.96, RAX200 before 1.0.4.120, RAX35v2 before 1.0.3.96, RAX40v2 before 1.0.3.96, RAX43 before 1.0.3.96, RAX45 before 1.0.3.96, RAX50 before 1.0.3.96, RAX75 before 1.0.4.120, RAX80 before 1.0.4.120, RBK752 before 3.2.17.12, RBK852 before 3.2.17.12, RBR750 before 3.2.17.12, RBR850 before 3.2.17.12, RBS750 before 3.2.
Remediation
Check the references section for vendor advisories and patches from netgear. Update cbr40_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| netgear | cbr40_firmware | >= 0, < 2.5.0.24 | Affected |
| netgear | cbr750_firmware | >= 0, < 4.6.3.6 | Affected |
| netgear | eax20_firmware | >= 0, < 1.0.0.58 | Affected |
| netgear | eax80_firmware | >= 0, < 1.0.1.68 | Affected |
| netgear | lax20_firmware | >= 0, < 1.1.6.28 | Affected |
| netgear | mr60_firmware | >= 0, < 1.0.6.116 | Affected |
| netgear | ms60_firmware | >= 0, < 1.0.6.116 | Affected |
| netgear | r6400v2_firmware | >= 0, < 1.0.4.118 | Affected |
| netgear | r6700v3_firmware | >= 0, < 1.0.4.118 | Affected |
| netgear | r6900p_firmware | >= 0, < 1.3.3.140 | Affected |
References
Frequently Asked Questions
What is CVE-2021-45620?
CVE-2021-45620 is a critical-severity vulnerability affecting netgear cbr40_firmware. It was published on December 26, 2021 and has a CVSS 3.1 base score of 9.6 (CRITICAL).
How severe is CVE-2021-45620?
This vulnerability has a CVSS 3.1 base score of 9.6, rated CRITICAL. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-45620?
Check the references section for vendor advisories and patches from netgear. Update cbr40_firmware to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-45620?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-45620 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
Related CRITICAL CVEs from 2021
View all →An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress. It made it
An issue was discovered in the Ultimate Member plugin before 2.1.12 for WordPress, aka Unauthenticat
An issue was discovered in the Ultimate Member plugin before 2.1.12 for WordPress, aka Unauthenticat
Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A r
Dell Wyse ThinOS 8.6 and prior versions contain an insecure default configuration vulnerability. A r
DELL EMC Avamar Server, versions 19.1, 19.2, 19.3, contain a SQL Injection Vulnerability in Fitness
DELL EMC Avamar Server, versions 19.1, 19.2, 19.3, contain an OS Command Injection Vulnerability in
An improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Ev
OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, a Kubernetes REST endpoint
OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, There is a vulnerability th
OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is a critical vulnera
OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, AttachmentUploadServlet als