CVE-2021-40866 describes a critical vulnerability in several NETGEAR smart switch models, allowing an unauthenticated attacker on the local network to remotely change the administrative password. This flaw stems from the /sqfs/bin/sccd daemon failing to authenticate NSDP packets when the authentication TLV is missing. With a CVSS score of 8.8 (High), this vulnerability presents a significant risk, as it permits full compromise of the affected devices (Confidentiality, Integrity, Availability impacts are High) with low attack complexity. Despite its severity, there is currently no public exploit code available (Metasploit, Nuclei, ExploitDB), and it is not listed on CISA's KEV catalog, indicating no known active exploitation. Community discussion and media coverage for this CVE are minimal.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.0.8.2CPE matchmatch criteria | cpe:2.3:o:netgear:gc108p_firmware:*:*:*:*:*:*:*:* | ||
< 1.0.8.2CPE matchmatch criteria | cpe:2.3:o:netgear:gc108pp_firmware:*:*:*:*:*:*:*:* | ||
< 7.0.7.2CPE matchmatch criteria | cpe:2.3:o:netgear:gs108t_firmware:*:*:*:*:*:*:*:* | ||
< 7.0.7.2CPE matchmatch criteria | cpe:2.3:o:netgear:gs110tpp_firmware:*:*:*:*:*:*:*:* | ||
< 7.0.7.2CPE matchmatch criteria | cpe:2.3:o:netgear:gs110tp_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/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.