RDK-B WebUI race condition vulnerability

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-19506
StatePUBLISHED
Assignercertcc
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-19 20:17:14 UTC
Updated2026-09-03 17:42:23 UTC
DescriptionRace 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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from ADP

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

EPSS: 0.003870000 probability, percentile 0.318920000 (date 2026-09-07)

Problem Types: CWE-362 | CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | CWE-362 CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA RDK RDK-B WebUI affected rdkb-2025q4-kirkstone Not specified

References

ReferenceSourceLinkTags
whitehats.pwr.edu.pl/blog/2026-08-19-multiple-vulnerabilities-in-rdkb [email protected] whitehats.pwr.edu.pl
developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/compo... [email protected] developer.rdkcentral.com
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