CVE-2021-38527
8.1 · HIGHOverview
CVE-2021-38527 is a high-severity vulnerability affecting netgear cbr40_firmware. It was published on August 11, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. 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 2.5.0.14, EX6100v2 before 1.0.1.98, EX6150v2 before 1.0.1.98, EX6250 before 1.0.0.132, EX6400 before 1.0.2.158, EX6400v2 before 1.0.0.132, EX6410 before 1.0.0.132, EX6420 before 1.0.0.132, EX7300 before 1.0.2.158, EX7300v2 before 1.0.0.132, EX7320 before 1.0.0.132, EX7700 before 1.0.0.216, EX8000 before 1.0.1.232, R7800 before 1.0.2.78, RBK12 before 2.6.1.44, RBR10 before 2.6.1.44, RBS10 before 2.6.1.44, RBK20 before 2.6.1.38, RBR20 before 2.6.1.36, RBS20 before 2.6.1.38, RBK40 before 2.6.1.38, RBR40 before 2.6.1.36, RBS40 before 2.6.1.38, RBK50 before 2.6.1.40, RBR50 before 2.6.1.40, RBS50 before 2.6.1.40, RBK752 before 3.2.16.6, RBR750 before 3.2.16.6, RBS750 before 3.2.16.6, RBK852 before 3.2.16.6, RBR850 before 3.2.16.6, RBS850 before 3.2.16.6, RBS40V before 2.6.2.4, RBS50Y before 2.6.1.40, RBW30 before 2.6.2.2, and XR500 before 2.3.2.114.
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, < 2.5.0.14 | Affected |
| netgear | ex6100_firmware | >= 0, < 1.0.1.98 | Affected |
| netgear | ex6150_firmware | >= 0, < 1.0.1.98 | Affected |
| netgear | ex6250_firmware | >= 0, < 1.0.0.132 | Affected |
| netgear | ex6400_firmware | >= 0, < 1.0.2.158 | Affected |
| netgear | ex6410_firmware | >= 0, < 1.0.0.132 | Affected |
| netgear | ex6420_firmware | >= 0, < 1.0.0.132 | Affected |
| netgear | ex7300_firmware | >= 0, < 1.0.2.158 | Affected |
| netgear | ex7320_firmware | >= 0, < 1.0.0.132 | Affected |
| netgear | ex7700_firmware | >= 0, < 1.0.0.216 | Affected |
References
Frequently Asked Questions
What is CVE-2021-38527?
CVE-2021-38527 is a high-severity vulnerability affecting netgear cbr40_firmware. It was published on August 11, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2021-38527?
This vulnerability has a CVSS 3.1 base score of 8.1, rated HIGH. 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-2021-38527?
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-2021-38527?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-38527 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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Browser-based exploitation validates findings with real proof-of-concept.
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