CVE-2026-19506: CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') in RDK RDK-B WebUI
Description
CVE-2026-19506 is a race condition vulnerability in the RDK-B WebUI component of RDK, specifically in the check.jst file of version rdkb-2025q4-kirkstone.04.10.26. This flaw allows remote attackers to gain unauthorized access by exploiting concurrent authentication requests that improperly synchronize shared authentication state. The vulnerability has a high severity with a CVSS score of 8.1.
CVSS v3.1
Score 8.1high
Affected software
RDK
RDK-B WebUI
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves a race condition (CWE-362) in the RDK-B WebUI's check.jst script, where concurrent authentication requests can manipulate shared authentication state without proper synchronization. This can lead to unauthorized access by remote attackers. The affected product is RDK-B WebUI version rdkb-2025q4-kirkstone.04.10.26. No patch or remediation details are provided in the available data.
Potential Impact
Successful exploitation of this race condition can result in unauthorized access with high confidentiality, integrity, and availability impacts, as indicated by the CVSS vector (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider restricting access to the affected WebUI interface and monitor for unusual authentication activity.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- certcc
- Date Reserved
- 2026-08-10T19:13:43.963Z
- State
- PUBLISHED
Threat ID: 6a860605acd9273b49871aaa
Added to database: 08/19/2026, 19:37:41 UTC
Last enriched: 09/11/2026, 06:32:13 UTC
Last updated: 10/04/2026, 10:02:26 UTC
Views: 57
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