{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-78862", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-10-05T19:55:37.063Z", "dateReserved": "2026-08-25T00:00:00.000Z", "datePublished": "2026-10-05T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-10-05T19:55:37.063Z"}, "descriptions": [{"lang": "en", "value": "An issue in Mercusys AC12 V2 allows a local attacker to execute arbitrary code via the UART serial interface on the printed circuit board (PCB)"}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "http://mercusys.com"}, {"url": "http://ac12.com"}, {"url": "https://threadpoolx.gitbook.io/docs/cve/mercusys-ac12-v2-security-advisory/unprotected-physical-debug-interface-uart"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}}, "dataVersion": "5.2"}

{}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue in Mercusys AC12 V2 allows a local attacker to execute arbitrary code via the UART serial interface on the printed circuit board (PCB)"}], "id": "CVE-2026-78862", "lastModified": "2026-10-05T20:17:27.570", "metrics": {}, "published": "2026-10-05T20:17:27.570", "references": [{"source": "cve@mitre.org", "url": "http://ac12.com"}, {"source": "cve@mitre.org", "url": "http://mercusys.com"}, {"source": "cve@mitre.org", "url": "https://threadpoolx.gitbook.io/docs/cve/mercusys-ac12-v2-security-advisory/unprotected-physical-debug-interface-uart"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received"}

{}

{"created": "2026-10-05T21:45:20.383024+00:00", "title": "Local UART-Based Arbitrary Code Execution on Mercusys AC12 V2", "updated": "2026-10-05T21:45:20.383032+00:00", "vendors": [], "weaknesses": ["CWE-94", "CWE-20"]}