CVE-2026-19506

high

Description

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.

References

https://kb.cert.org/vuls/id/874418

https://whitehats.pwr.edu.pl//blog/2026-08-19-multiple-vulnerabilities-in-rdkb/

https://developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/components/webui/

Details

Source: Mitre, NVD

Published: 2026-08-19

Updated: 2026-08-27

Risk Information

CVSS v2

Base Score: 7.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 8.1

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H