CVE-2026-19506CWE-362

CVE-2026-19506

High · published August 20, 2026

CVSS v3.1
8.1
EPSS
0%
Percentile
28.6
In the wild
Unconfirmed
What it is

Race condition in `check.jst` in RDK-B WebUI `rdkb-2025q4-kirkstone.04.10.26` allows a remote attacker to gain unauthorized access via concurrent authentication requests that exploit shared authentication state.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00360 · 28.6th percentile
Weakness
CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Published
2026-08-20T00:17Z
References (2)
https://developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/components/webui/ · [email protected]https://whitehats.pwr.edu.pl//blog/2026-08-19-multiple-vulnerabilities-in-rdkb/ · [email protected]
EPSS history
Timeline
  • 19 AUG 19:27Z
    RDK-B WebUI race condition vulnerability
    cvelistv5