CVE-2018-21203
Last modified
CVE-2018-21203 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects R6100 before 1.0.1.20, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.50, and WNDR4500v3 before 1.0.0.50.. EPSS estimates a 0.75% chance of exploitation in the next 30 days.
Description
Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects R6100 before 1.0.1.20, R9000 before 1.0.2.52, WNDR3700v4 before 1.0.2.96, WNDR4300 before 1.0.2.98, WNDR4300v2 before 1.0.0.50, and WNDR4500v3 before 1.0.0.50.
Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Netgear | R6100 Firmware | < 1.0.1.20 |
| Netgear | R9000 Firmware | < 1.0.2.52 |
| Netgear | Wndr3700 Firmware | < 1.0.2.96 |
| Netgear | Wndr4300 Firmware | < 1.0.2.98 |
| Netgear | Wndr4300 Firmware | < 1.0.0.50 |
| Netgear | Wndr4500 Firmware | < 1.0.0.50 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-21203?
How severe is CVE-2018-21203?
How do I fix CVE-2018-21203?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2018
- CVE-2018-21198Certain NETGEAR devices are affected by a stack-based buffer…6.8
- CVE-2018-21199Certain NETGEAR devices are affected by a stack-based buffer…6.8
- CVE-2018-2120Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultI…
- CVE-2018-21200Certain NETGEAR devices are affected by a stack-based buffer…6.8
- CVE-2018-21201Certain NETGEAR devices are affected by a stack-based buffer…6.8
- CVE-2018-21202Certain NETGEAR devices are affected by a stack-based buffer…8.8
- CVE-2018-21204Certain NETGEAR devices are affected by a stack-based buffer…8.8
- CVE-2018-21205Certain NETGEAR devices are affected by a stack-based buffer…8.8
- CVE-2018-21206Certain NETGEAR devices are affected by a stack-based buffer…8.8
- CVE-2018-21207Certain NETGEAR devices are affected by a stack-based buffer…8.8
- CVE-2018-21208Certain NETGEAR devices are affected by command injection by…8.8
- CVE-2018-21209Certain NETGEAR devices are affected by reflected XSS. This …4.8
Are you affected by CVE-2018-21203?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST