CVE-2021-45617
9.8 · CRITICALOverview
CVE-2021-45617 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 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. 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, EAX20 before 1.0.0.48, EAX80 before 1.0.1.64, EX7500 before 1.0.0.72, R6400 before 1.0.1.68, R6900P before 1.3.2.132, R7000 before 1.0.11.116, R7000P before 1.3.2.132, R7900 before 1.0.4.38, R7960P before 1.4.1.66, R8000 before 1.0.4.66, RAX200 before 1.0.3.106, RS400 before 1.5.1.80, XR300 before 1.0.3.68, MK62 before 1.0.6.110, MR60 before 1.0.6.110, R6400v2 before 1.0.4.106, R8000P before 1.4.1.66, RAX20 before 1.0.2.64, RAX45 before 1.0.2.82, RAX80 before 1.0.3.106, MS60 before 1.0.6.110, R6700v3 before 1.0.4.106, R7900P before 1.4.1.66, RAX15 before 1.0.2.64, RAX50 before 1.0.2.82, RAX75 before 1.0.3.106, RBR750 before 3.2.16.22, RBR850 before 3.2.16.22, RBS750 before 3.2.16.22, RBS850 before 3.2.16.22, RBK752 before 3.2.16.22, and RBK852 before 3.2.16.22.
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 | eax20_firmware | >= 0, < 1.0.0.48 | Affected |
| netgear | eax80_firmware | >= 0, < 1.0.1.64 | Affected |
| netgear | ex7500_firmware | >= 0, < 1.0.0.72 | Affected |
| netgear | r6400_firmware | >= 0, < 1.0.1.68 | Affected |
| netgear | r6900p_firmware | >= 0, < 1.3.2.132 | Affected |
| netgear | r7000_firmware | >= 0, < 1.0.11.116 | Affected |
| netgear | r7000p_firmware | >= 0, < 1.3.2.132 | Affected |
| netgear | r7900_firmware | >= 0, < 1.0.4.38 | Affected |
| netgear | r7960p_firmware | >= 0, < 1.4.1.66 | Affected |
References
Frequently Asked Questions
What is CVE-2021-45617?
CVE-2021-45617 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 9.8 (CRITICAL).
How severe is CVE-2021-45617?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2021-45617?
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-2021-45617?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-45617 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.
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