CVE-2018-21203: Buffer Overflow
First published: Tue Apr 28 2020(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Netgear R6100 Firmware | <1.0.1.20 | |
| Netgear R6100 | ||
| Netgear R9000 Firmware | <1.0.2.52 | |
| NETGEAR R9000 | ||
| Netgear Wndr3700 Firmware | <1.0.2.96 | |
| Netgear WNDR3700 | =v4 | |
| Netgear Wndr4300 Firmware | <1.0.2.98 | |
| Netgear Wndr4300 | ||
| Netgear Wndr4300 Firmware | <1.0.0.50 | |
| Netgear Wndr4300 | =v2 | |
| Netgear Wndr4500 Firmware | <1.0.0.50 | |
| Netgear WNDR4500 | =v3 |
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Reference Links
Frequently Asked Questions
What is CVE-2018-21203?
CVE-2018-21203 is a vulnerability that affects certain NETGEAR devices and allows an unauthenticated attacker to perform a stack-based buffer overflow.
Which NETGEAR devices are affected by CVE-2018-21203?
CVE-2018-21203 affects the following NETGEAR devices: 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).
What is the severity of CVE-2018-21203?
CVE-2018-21203 has a severity rating of 8.8 (High).
How can I fix CVE-2018-21203?
To fix CVE-2018-21203, it is recommended to update the firmware of the affected NETGEAR devices to the latest version available.
Where can I find more information about CVE-2018-21203?
You can find more information about CVE-2018-21203 in the Netgear security advisory at the following link: [https://kb.netgear.com/000055146/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2017-2589](https://kb.netgear.com/000055146/Security-Advisory-for-Pre-Authentication-Stack-Overflow-on-Some-Routers-PSV-2017-2589)
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- canonical/netgear r6100 firmware
- canonical/netgear r6100
- canonical/netgear r9000 firmware
- canonical/netgear r9000
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- canonical/netgear wndr3700
- version/netgear wndr3700/v4
- canonical/netgear wndr4300 firmware
- canonical/netgear wndr4300
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- canonical/netgear wndr4500 firmware
- canonical/netgear wndr4500
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