CVE-2026-19506 (GCVE-0-2026-19506)
Vulnerability from cvelistv5 – Published: 2026-08-19 19:27 – Updated: 2026-08-27 15:47
VLAI
EPSS
VEX
Title
RDK-B WebUI race condition vulnerability
Summary
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.
Severity
8.1 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 15:47 UTC
CWE
- CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
- CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| RDK | RDK-B WebUI |
Affected:
rdkb-2025q4-kirkstone
|
guessed |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-19506",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-27T15:47:33.034497Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-362",
"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-27T15:47:36.279Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "RDK-B WebUI",
"vendor": "RDK",
"versions": [
{
"status": "affected",
"version": "rdkb-2025q4-kirkstone"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T19:27:55.948Z",
"orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
"shortName": "certcc"
},
"references": [
{
"url": "https://developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/components/webui/"
},
{
"url": "https://whitehats.pwr.edu.pl//blog/2026-08-19-multiple-vulnerabilities-in-rdkb/"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "RDK-B WebUI race condition vulnerability",
"x_generator": {
"engine": "VINCE 3.0.44",
"env": "prod",
"origin": "https://cveawg.mitre.org/api/cve/CVE-2026-19506"
}
}
},
"cveMetadata": {
"assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
"assignerShortName": "certcc",
"cveId": "CVE-2026-19506",
"datePublished": "2026-08-19T19:27:55.948Z",
"dateReserved": "2026-08-10T19:13:43.963Z",
"dateUpdated": "2026-08-27T15:47:36.279Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-19506",
"date": "2026-09-20",
"epss": "0.00387",
"percentile": "0.3261"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"product": "RDK-B WebUI",
"vendor": "RDK",
"versions": [
{
"status": "affected",
"version": "rdkb-2025q4-kirkstone"
}
]
}
],
"source": "cret@cert.org"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"id": "CVE-2026-19506",
"lastModified": "2026-09-03T17:42:23.907",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.9,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-19506",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-27T15:47:33.034497Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-08-19T20:17:14.293",
"references": [
{
"source": "cret@cert.org",
"url": "https://developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/components/webui/"
},
{
"source": "cret@cert.org",
"url": "https://whitehats.pwr.edu.pl//blog/2026-08-19-multiple-vulnerabilities-in-rdkb/"
}
],
"sourceIdentifier": "cret@cert.org",
"vulnStatus": "Awaiting Analysis",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-362"
}
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
]
}
},
"vulnrichment": {
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-19506",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-08-27T15:47:33.034497Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-362",
"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-27T15:43:49.846Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "RDK-B WebUI",
"vendor": "RDK",
"versions": [
{
"status": "affected",
"version": "rdkb-2025q4-kirkstone"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-19T19:27:55.948Z",
"orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
"shortName": "certcc"
},
"references": [
{
"url": "https://developer.rdkcentral.com/documentation/documentation/rdk_broadband_documentation/components/webui/"
},
{
"url": "https://whitehats.pwr.edu.pl//blog/2026-08-19-multiple-vulnerabilities-in-rdkb/"
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "RDK-B WebUI race condition vulnerability",
"x_generator": {
"engine": "VINCE 3.0.44",
"env": "prod",
"origin": "https://cveawg.mitre.org/api/cve/CVE-2026-19506"
}
}
},
"cveMetadata": {
"assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
"assignerShortName": "certcc",
"cveId": "CVE-2026-19506",
"datePublished": "2026-08-19T19:27:55.948Z",
"dateReserved": "2026-08-10T19:13:43.963Z",
"dateUpdated": "2026-08-27T15:47:36.279Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…