CVE-2021-45528
8.1 · HIGHOverview
CVE-2021-45528 is a high-severity vulnerability affecting netgear r6300v2_firmware. It was published on December 26, 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. Some level of privileges is required for exploitation.
Technical Description
Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects R6300v2 before 1.0.4.52, R6400 before 1.0.1.52, R6900 before 1.0.2.8, R7000 before 1.0.9.88, R7900 before 1.0.3.18, R8000 before 1.0.4.46, R7900P before 1.4.1.50, R8000P before 1.4.1.50, RAX75 before 1.0.3.88, RAX80 before 1.0.3.88, and WNR3500Lv2 before 1.2.0.62.
Remediation
Check the references section for vendor advisories and patches from netgear. Update r6300v2_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 | r6300v2_firmware | 0 | Affected |
| netgear | r6400_firmware | >= 0, < 1.0.1.52 | Affected |
| netgear | r6900_firmware | >= 0, < 1.0.2.8 | Affected |
| netgear | r7000_firmware | >= 0, < 1.0.9.88 | Affected |
| netgear | r7900_firmware | >= 0, < 1.0.3.18 | Affected |
| netgear | r7900p_firmware | >= 0, < 1.4.1.50 | Affected |
| netgear | r8000_firmware | >= 0, < 1.0.4.46 | Affected |
| netgear | r8000p_firmware | >= 0, < 1.4.1.50 | Affected |
| netgear | rax75_firmware | >= 0, < 1.0.3.88 | Affected |
| netgear | rax80_firmware | >= 0, < 1.0.3.88 | Affected |
Frequently Asked Questions
What is CVE-2021-45528?
CVE-2021-45528 is a high-severity vulnerability affecting netgear r6300v2_firmware. It was published on December 26, 2021 and has a CVSS 3.1 base score of 8.1 (HIGH).
How severe is CVE-2021-45528?
This vulnerability has a CVSS 3.1 base score of 8.1, 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-2021-45528?
Check the references section for vendor advisories and patches from netgear. Update r6300v2_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-2021-45528?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-45528 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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