CVE-2022-27947: NETGEAR r8500 Firmware

High severity, CVSS 8.8. EPSS: 2.9% chance of exploitation in the next 30 days.

NETGEAR R8500 1.0.2.158 devices allow remote authenticated users to execute arbitrary commands (such as telnetd) via shell metacharacters in the ipv6_fix.cgi ipv6_wan_ipaddr, ipv6_lan_ipaddr, ipv6_wan_length, or ipv6_lan_length parameter.

Affected products

• NETGEAR r8500 Firmware: version 1.0.2.158 only

Published 2022-03-26. Last modified 2026-06-17.