CVE-2018-21203 describes a stack-based buffer overflow vulnerability affecting several NETGEAR router models, including the R6100, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, and WNDR4500v3, in specific firmware versions. This vulnerability carries a high CVSS score of 8.8, indicating a critical risk due to its network-adjacent attack vector, low attack complexity, and potential for complete compromise of confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (e.g., Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE. Organizations using affected NETGEAR devices should update their firmware to the patched versions to mitigate this risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.0.1.20CPE matchmatch criteria | cpe:2.3:o:netgear:r6100_firmware:*:*:*:*:*:*:*:* | ||
< 1.0.2.52CPE matchmatch criteria | cpe:2.3:o:netgear:r9000_firmware:*:*:*:*:*:*:*:* | ||
< 1.0.2.96CPE matchmatch criteria | cpe:2.3:o:netgear:wndr3700_firmware:*:*:*:*:*:*:*:* | ||
< 1.0.2.98CPE matchmatch criteria | cpe:2.3:o:netgear:wndr4300_firmware:*:*:*:*:*:*:*:* | ||
< 1.0.0.50CPE matchmatch criteria | cpe:2.3:o:netgear:wndr4300_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.