RDK WebUI rdkb-2025q4-kirkstone.04.10.26 check.jst race condition

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in RDK WebUI rdkb-2025q4-kirkstone.04.10.26. Affected is an unknown function of the file check.jst. Such manipulation leads to race condition. This vulnerability is documented as CVE-2026-19506. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in RDK WebUI rdkb-2025q4-kirkstone.04.10.26. It has been rated as critical. Affected by this issue is an unknown part of the file check.jst. The manipulation with an unknown input leads to a race condition vulnerability. Using CWE to declare the problem leads to CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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 advisory is available at developer.rdkcentral.com. This vulnerability is handled as CVE-2026-19506 since 08/10/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/10/2026 CVE reserved
08/19/2026 +9 days Advisory disclosed
08/19/2026 +0 days VulDB entry created
08/19/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: developer.rdkcentral.com
Status: Not defined

CVE: CVE-2026-19506 (🔒)
GCVE (CVE): GCVE-0-2026-19506
GCVE (VulDB): GCVE-100-393326

Entryinfo

Created: 08/19/2026 21:46
Changes: 08/19/2026 21:46 (52)
Complete: 🔍
Cache ID: 216::103

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