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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-52748",
"assignerOrgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
"state": "PUBLISHED",
"assignerShortName": "CERT-PL",
"dateReserved": "2026-06-08T14:40:31.449Z",
"datePublished": "2026-09-28T13:01:54.068Z",
"dateUpdated": "2026-09-28T13:31:27.461Z"
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"shortName": "CERT-PL",
"dateUpdated": "2026-09-28T13:01:54.068Z"
},
"title": "Missing authentication for backup functionality in Kaon AR2140X",
"datePublic": "2026-07-21T12:00:00.000Z",
"problemTypes": [
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"descriptions": [
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"lang": "en",
"cweId": "CWE-306",
"description": "CWE-306 Missing authentication for critical function",
"type": "CWE"
}
]
}
],
"affected": [
{
"vendor": "Kaon",
"product": "AR2140",
"versions": [
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"status": "affected",
"version": "0",
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"value": "The Kaon AR2140X router contains a vulnerability where the backup functionality is accessible without authentication. This allows an unauthenticated remote attacker to trigger a configuration backup and retrieve it in a form encrypted by a device-specific key. Triggering this function renders the router inoperable for a substantial period of time. \n\n\n\nThis issue was identified in firmware versions up to 4.2.17. Status of newer versions remains unknown.",
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"value": "<p>The Kaon AR2140X router contains a vulnerability where the backup functionality is accessible without authentication. This allows an unauthenticated remote attacker to trigger a configuration backup and retrieve it in a form encrypted by a device-specific key. Triggering this function renders the router inoperable for a substantial period of time.&nbsp;</p><p>This issue was&nbsp;<span>identified in firmware versions up to </span><span>4</span><span>.2.</span><span>17</span><span>. Status of newer versions remains unknown.</span></p>"
}
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}
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"references": [
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"url": "https://cert.pl/en/posts/2026/09/CVE-2026-52748",
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"attackComplexity": "LOW",
"attackRequirements": "NONE",
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"userInteraction": "NONE",
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"subConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
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"exploitMaturity": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED",
"version": "4.0",
"baseSeverity": "HIGH",
"baseScore": 7.1,
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N"
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"value": "Sebastian Jeż",
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"timestamp": "2026-09-28T13:19:21.836649Z"
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