CVE-2026-19509: CWE-20 Improper Input Validation in RDK RDK-B WebUI
Description
CVE-2026-19509 is a medium severity vulnerability in RDK-B WebUI affecting the ajaxSet_wireless_network_configuration.jst component. It involves improper input validation of the ssid_number parameter, which can be exploited by an authenticated attacker to cause a denial of service. No information about affected versions or patches is provided.
CVSS v3.1
Score 6.5medium
Affected software
RDK
RDK-B WebUI
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from improper input validation in the ajaxSet_wireless_network_configuration.jst file of the RDK-B WebUI (version rdkb-2025q4-kirkstone.04.10.26). An authenticated attacker can supply a crafted ssid_number parameter to trigger a denial of service condition. The vulnerability is tracked as CVE-2026-19509 and is classified under CWE-20 (Improper Input Validation).
Potential Impact
An authenticated attacker can cause denial of service on the affected RDK-B WebUI component by exploiting improper input validation of the ssid_number parameter. There is no indication of confidentiality or integrity impact.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- certcc
- Date Reserved
- 2026-08-10T19:14:27.939Z
- State
- PUBLISHED
Threat ID: 6a860607acd9273b49871abe
Added to database: 08/19/2026, 19:37:43 UTC
Last enriched: 09/11/2026, 07:49:19 UTC
Last updated: 10/04/2026, 10:02:26 UTC
Views: 45
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