CVE-2018-21156
Last modified
CVE-2018-21156 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects D6220 before 1.0.0.38, D6400 before 1.0.0.74, D7000v2 before 1.0.0.74, D8500 before 1.0.3.39, DGN2200v4 before 1.0.0.102, DGN2200Bv4 before 1.0.0.102, EX3700 before 1.0.0.70, EX3800 before 1.0.0.70, EX6000 before 1.0.0.30, EX6100 before 1.0.2.22, EX6120 before 1.0.0.40, EX6130 before 1.0.0.22, EX6150 before 1.0.0.38, EX6200 before 1.0.3.86, EX7000 before 1.0.0.64, R6250 before 1.0.4.20, R6300v2 before 1.0.4.22, R6400 before 1.0.1.32, R6400v2 before 1.0.2.52, R6700 before 1.0.1.44, R6900 before 1.0.1.44, R6900P before 1.3.0.18, R7000 before 1.0.9.28, R7000P before 1.3.0.18, R7300DST before 1.0.0.62, R7900 before 1.0.2.10, R7900P before 1.3.0.10, R8000 before 1.0.4.12, R8000P before 1.3.0.10, R8300 before 1.0.2.116, R8500 before 1.0.2.116, WN2500RPv2 before 1.0.1.52, WNDR3400v3 before 1.0.1.18, and WNR3500Lv2 before 1.2.0.46.. EPSS estimates a 1.35% chance of exploitation in the next 30 days.
Description
Certain NETGEAR devices are affected by a buffer overflow by an authenticated user. This affects D6220 before 1.0.0.38, D6400 before 1.0.0.74, D7000v2 before 1.0.0.74, D8500 before 1.0.3.39, DGN2200v4 before 1.0.0.102, DGN2200Bv4 before 1.0.0.102, EX3700 before 1.0.0.70, EX3800 before 1.0.0.70, EX6000 before 1.0.0.30, EX6100 before 1.0.2.22, EX6120 before 1.0.0.40, EX6130 before 1.0.0.22, EX6150 before 1.0.0.38, EX6200 before 1.0.3.86, EX7000 before 1.0.0.64, R6250 before 1.0.4.20, R6300v2 before 1.0.4.22, R6400 before 1.0.1.32, R6400v2 before 1.0.2.52, R6700 before 1.0.1.44, R6900 before 1.0.1.44, R6900P before 1.3.0.18, R7000 before 1.0.9.28, R7000P before 1.3.0.18, R7300DST before 1.0.0.62, R7900 before 1.0.2.10, R7900P before 1.3.0.10, R8000 before 1.0.4.12, R8000P before 1.3.0.10, R8300 before 1.0.2.116, R8500 before 1.0.2.116, WN2500RPv2 before 1.0.1.52, WNDR3400v3 before 1.0.1.18, and WNR3500Lv2 before 1.2.0.46.
Metrics
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Netgear | D6220 Firmware | < 1.0.0.38 |
| Netgear | D6400 Firmware | < 1.0.0.74 |
| Netgear | D7000 Firmware | < 1.0.0.74 |
| Netgear | D8500 Firmware | < 1.0.3.39 |
| Netgear | Dgn2200 Firmware | < 1.0.0.102 |
| Netgear | Dgn2200b Firmware | < 1.0.0.102 |
| Netgear | Ex3700 Firmware | < 1.0.0.70 |
| Netgear | Ex3800 Firmware | < 1.0.0.70 |
| Netgear | Ex6000 Firmware | < 1.0.0.30 |
| Netgear | Ex6100 Firmware | < 1.0.2.22 |
| Netgear | Ex6120 Firmware | < 1.0.0.40 |
| Netgear | Ex6130 Firmware | < 1.0.0.22 |
| Netgear | Ex6150 Firmware | < 1.0.0.38 |
| Netgear | Ex6200 Firmware | < 1.0.3.86 |
| Netgear | Ex7000 Firmware | < 1.0.0.64 |
| Netgear | R6250 Firmware | < 1.0.4.20 |
| Netgear | R6300 Firmware | < 1.0.4.22 |
| Netgear | R6400 Firmware | < 1.0.1.32 |
| Netgear | R6400 Firmware | < 1.0.2.52 |
| Netgear | R6700 Firmware | < 1.0.1.44 |
| Netgear | R6900 Firmware | < 1.0.1.44 |
| Netgear | R6900p Firmware | < 1.3.0.18 |
| Netgear | R7000 Firmware | < 1.0.9.28 |
| Netgear | R7000p Firmware | < 1.3.0.18 |
| Netgear | R7300dst Firmware | < 1.0.0.62 |
| Netgear | R7900 Firmware | < 1.0.2.10 |
| Netgear | R7900p Firmware | < 1.3.0.10 |
| Netgear | R8000 Firmware | < 1.0.4.12 |
| Netgear | R8000p Firmware | < 1.3.0.10 |
| Netgear | R8300 Firmware | < 1.0.2.116 |
| Netgear | R8500 Firmware | < 1.0.2.116 |
| Netgear | Wn2500rp Firmware | < 1.0.1.52 |
| Netgear | Wndr3400 Firmware | < 1.0.1.18 |
| Netgear | Wnr3500l Firmware | < 1.2.0.46 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-21156?
How severe is CVE-2018-21156?
How do I fix CVE-2018-21156?
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-2018-21150Certain NETGEAR devices are affected by a stack-based buffer…6.8
- CVE-2018-21151Certain NETGEAR devices are affected by a buffer overflow by…6.8
- CVE-2018-21152Certain NETGEAR devices are affected by command injection by…6.8
- CVE-2018-21153Certain NETGEAR devices are affected by a buffer overflow by…9.8
- CVE-2018-21154Certain NETGEAR devices are affected by command injection by…6.8
- CVE-2018-21155Certain NETGEAR devices are affected by stored XSS. This aff…6.1
- CVE-2018-21157Certain NETGEAR devices are affected by command injection by…6.8
- CVE-2018-21158NETGEAR R7800 devices before 1.0.2.46 are affected by incorr…8.8
- CVE-2018-21159NETGEAR ReadyNAS devices before 6.9.3 are affected by incorr…4.9
- CVE-2018-2116Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultI…
- CVE-2018-21160NETGEAR ReadyNAS devices before 6.9.3 are affected by CSRF.8.8
- CVE-2018-21161Certain NETGEAR devices are affected by incorrect configurat…9.8
Are you affected by CVE-2018-21156?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST