CVE-2026-19509 PUBLISHED

Improper input validation in ajaxSet_wireless_network_configuration.jst in RDK-B WebUI rdkb-2025q4-kirkstone.04.10.26 allows an authenticated attacker to cause denial of service via a crafted ssid_number parameter.

• https://whitehats.pwr.edu.pl//blog/2026-08-19-multiple-vulnerabilities-in-rdkb/
• https://developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/components/webui/

• CWE-20 Improper Input Validation