CVE-2018-21153
9.8 · CRITICALOverview
CVE-2018-21153 is a critical-severity vulnerability affecting netgear d7800_firmware. It was published on April 27, 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 buffer overflow by an unauthenticated attacker. This affects D7800 before 1.0.1.34, DM200 before 1.0.0.50, EX2700 before 1.0.1.32, EX6100v2 before 1.0.1.70, EX6150v2 before 1.0.1.70, EX6200v2 before 1.0.1.62, EX6400 before 1.0.1.78, EX7300 before 1.0.1.62, EX8000 before 1.0.0.114, R6100 before 1.0.1.22, R7500 before 1.0.0.122, R7500v2 before 1.0.3.26, R7800 before 1.0.2.40, R8900 before 1.0.3.10, R9000 before 1.0.3.10, WN2000RPTv3 before 1.0.1.26, WN3000RPv2 before 1.0.0.56, WN3000RPv3 before 1.0.2.66, WN3100RPv2 before 1.0.0.56, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.54, WNDR4500v3 before 1.0.0.54, and WNR2000v5 before 1.0.0.64.
Remediation
Check the references section for vendor advisories and patches from netgear. Update d7800_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 | d7800_firmware | >= 0, < 1.0.1.34 | Affected |
| netgear | dm200_firmware | >= 0, < 1.0.0.50 | Affected |
| netgear | ex2700_firmware | >= 0, < 1.0.1.32 | Affected |
| netgear | ex6100_firmware | >= 0, < 1.0.1.70 | Affected |
| netgear | ex6150_firmware | >= 0, < 1.0.1.70 | Affected |
| netgear | ex6200_firmware | >= 0, < 1.0.1.62 | Affected |
| netgear | ex6400_firmware | >= 0, < 1.0.1.78 | Affected |
| netgear | ex7300_firmware | >= 0, < 1.0.1.62 | Affected |
| netgear | ex8000_firmware | >= 0, < 1.0.0.114 | Affected |
| netgear | r6100_firmware | >= 0, < 1.0.1.22 | Affected |
Frequently Asked Questions
What is CVE-2018-21153?
CVE-2018-21153 is a critical-severity vulnerability affecting netgear d7800_firmware. It was published on April 27, 2020 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2018-21153?
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-2018-21153?
Check the references section for vendor advisories and patches from netgear. Update d7800_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-2018-21153?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-21153 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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