CVE-2021-45543
8.4 · HIGHOverview
CVE-2021-45543 is a high-severity vulnerability affecting netgear r8000_firmware. It was published on December 26, 2021 and has a CVSS 3.1 base score of 8.4 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
Certain NETGEAR devices are affected by command injection by an authenticated user. This affects R8000 before 1.0.4.74, RAX200 before 1.0.4.120, R8000P before 1.4.2.84, R7900P before 1.4.2.84, RBR850 before 3.2.17.12, RBS850 before 3.2.17.12, and RBK852 before 3.2.17.12.
Remediation
Check the references section for vendor advisories and patches from netgear. Update r8000_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 | r8000_firmware | >= 0, < 1.0.4.74 | Affected |
| netgear | r8000p_firmware | >= 0, < 1.4.2.84 | Affected |
| netgear | rax200_firmware | >= 0, < 1.0.4.120 | Affected |
| netgear | rbr850_firmware | >= 0, < 3.2.17.12 | Affected |
| netgear | rbs850_firmware | >= 0, < 3.2.17.12 | Affected |
| netgear | rbk852_firmware | >= 0, < 3.2.17.12 | Affected |
Frequently Asked Questions
What is CVE-2021-45543?
CVE-2021-45543 is a high-severity vulnerability affecting netgear r8000_firmware. It was published on December 26, 2021 and has a CVSS 3.1 base score of 8.4 (HIGH).
How severe is CVE-2021-45543?
This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-45543?
Check the references section for vendor advisories and patches from netgear. Update r8000_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-2021-45543?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-45543 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.
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