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vuln-cve/data/2026/3xxx/CVE-2026-3871.json
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"cveId": "CVE-2026-3871",
"assignerOrgId": "96e50032-ad0d-4058-a115-4d2c13821f9f",
"state": "PUBLISHED",
"assignerShortName": "Zyxel",
"dateReserved": "2026-03-10T08:42:18.809Z",
"datePublished": "2026-06-02T02:04:17.047Z",
"dateUpdated": "2026-06-02T13:34:07.547Z"
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"cweId": "CWE-120",
"description": "CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')",
"type": "CWE"
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"product": "VMG4005-B50B firmware",
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"references": [
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"url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-buffer-overflow-vulnerabilities-in-the-upnp-function-of-certain-4g-lte-5g-nr-cpe-and-dsl-ethernet-cpe-06-02-2026",
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"attackVector": "ADJACENT_NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"availabilityImpact": "HIGH",
"baseSeverity": "MEDIUM",
"baseScore": 6.5,
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
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"title": "CISA ADP Vulnrichment",
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