Netgear R6900P v1.3.3.154 was discovered to contain multiple buffer overflows via the wla_ssid and wlg_ssid parameters at ia_ap_setting.cgi.
https://www.netgear.com/about/security/
https://github.com/FirmRec/IoT-Vulns/blob/main/netgear/nvram_ssid/README.md