CVE-2021-27256 is a critical vulnerability affecting NETGEAR R7800 firmware version 1.0.2.76, allowing network-adjacent attackers to execute arbitrary code as root. The flaw stems from improper validation of the 'rc_service' parameter in 'apply_save.cgi', leading to a system call injection. With a CVSS score of 8.8 (High), this vulnerability is easily exploitable over the network without user interaction, despite requiring an authentication bypass. There is currently no public exploit code available, nor any evidence of active exploitation or significant community discussion.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 5.10.0.5CPE matchmatch criteria | cpe:2.3:o:netgear:br200_firmware:*:*:*:*:*:*:*:* | ||
< 5.10.0.5CPE matchmatch criteria | cpe:2.3:o:netgear:br500_firmware:*:*:*:*:*:*:*:* | ||
< 1.0.1.60CPE matchmatch criteria | cpe:2.3:o:netgear:d7800_firmware:*:*:*:*:*:*:*:* | ||
< 1.0.1.98CPE matchmatch criteria | cpe:2.3:o:netgear:ex6100v2_firmware:*:*:*:*:*:*:*:* | ||
< 1.0.1.98CPE matchmatch criteria | cpe:2.3:o:netgear:ex6150v2_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.