CVE-2018-21134
9.8 · CRITICALOverview
CVE-2018-21134 is a critical-severity vulnerability affecting netgear r6700_firmware. It was published on April 23, 2020 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 a stack-based buffer overflow by an unauthenticated attacker. This affects R6700 before 1.0.1.48, R7900 before 1.0.2.16, R6900 before 1.0.1.48, R7000P before 1.3.1.44, R6900P before 1.3.1.44, R6250 before 1.0.4.30, R6300v2 before 1.0.4.32, R6400 before 1.0.1.44, R6400v2 before 1.0.2.60, R7000 before 1.0.9.34, R7100LG before 1.0.0.48, R7300 before 1.0.0.68, R8000 before 1.0.4.18, R8000P before 1.4.1.24, R7900P before 1.4.1.24, R8500 before 1.0.2.122, R8300 before 1.0.2.122, WN2500RPv2 before 1.0.1.54, EX3700 before 1.0.0.72, EX3800 before 1.0.0.72, EX6000 before 1.0.0.32, EX6100 before 1.0.2.24, EX6120 before 1.0.0.42, EX6130 before 1.0.0.24, EX6150v1 before 1.0.0.42, EX6200 before 1.0.3.88, EX7000 before 1.0.0.66, D7000v2 before 1.0.0.51, D6220 before 1.0.0.46, D6400 before 1.0.0.82, and D8500 before 1.0.3.42.
Remediation
Check the references section for vendor advisories and patches from netgear. Update r6700_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 | r6700_firmware | >= 0, < 1.0.1.48 | Affected |
| netgear | r7900_firmware | >= 0, < 1.0.2.16 | Affected |
| netgear | r6900_firmware | >= 0, < 1.0.1.48 | Affected |
| netgear | r7000p_firmware | >= 0, < 1.3.1.44 | Affected |
| netgear | r6900p_firmware | >= 0, < 1.3.1.44 | Affected |
| netgear | r6250_firmware | >= 0, < 1.0.4.30 | Affected |
| netgear | r6300_firmware | >= 0, < 1.0.4.32 | Affected |
| netgear | r6400_firmware | >= 0, < 1.0.1.44 | Affected |
| netgear | r7000_firmware | >= 0, < 1.0.9.34 | Affected |
| netgear | r7100lg_firmware | >= 0, < 1.0.0.48 | Affected |
Frequently Asked Questions
What is CVE-2018-21134?
CVE-2018-21134 is a critical-severity vulnerability affecting netgear r6700_firmware. It was published on April 23, 2020 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2018-21134?
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-2018-21134?
Check the references section for vendor advisories and patches from netgear. Update r6700_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-2018-21134?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-21134 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.
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