{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-12218", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-06-14T13:54:11.247Z", "datePublished": "2026-06-15T04:15:10.808Z", "dateUpdated": "2026-06-27T05:44:47.996Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-06-27T05:44:47.996Z"}, "title": "Yealink SIP-T46U Web FastCGI Service beforewifitest StartReportInformation stack-based overflow", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-121", "lang": "en", "description": "Stack-based Buffer Overflow"}]}, {"descriptions": [{"type": "CWE", "cweId": "CWE-119", "lang": "en", "description": "Memory Corruption"}]}], "affected": [{"vendor": "Yealink", "product": "SIP-T46U", "versions": [{"version": "108.87.50.1", "status": "affected"}], "cpes": ["cpe:2.3:a:yealink:sip-t46u:*:*:*:*:*:*:*:*"], "modules": ["Web FastCGI Service"]}], "descriptions": [{"lang": "en", "value": "A vulnerability was detected in Yealink SIP-T46U 108.87.50.1. The affected element is the function StartReportInformation of the file /api/inner/beforewifitest of the component Web FastCGI Service. The manipulation of the argument port results in stack-based buffer overflow. Access to the local network is required for this attack. The exploit is now public and may be used. The vendor was contacted early about this disclosure and is working on a patch to fix it."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 8.6, "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P", "baseSeverity": "HIGH"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 8, "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:C", "baseSeverity": "HIGH"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 8, "vectorString": "CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:C", "baseSeverity": "HIGH"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 7.7, "vectorString": "AV:A/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:C"}}], "timeline": [{"time": "2026-06-14T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-06-14T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-06-27T07:45:46.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "CookedMelon (VulDB User)", "type": "reporter"}, {"lang": "en", "value": "VulDB CNA Team", "type": "coordinator"}], "references": [{"url": "https://vuldb.com/vuln/370861", "name": "VDB-370861 | Yealink SIP-T46U Web FastCGI Service beforewifitest StartReportInformation stack-based overflow", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/370861/cti", "name": "VDB-370861 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-12218", "name": "CVE-2026-12218 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/834193", "name": "Submit #834193 | yealink T46U 108.87.50.1 stack", "tags": ["third-party-advisory"]}, {"url": "http://cdn2.v50to.cc/T46U/T46U_beforewifitest_stack_overflow.zip", "tags": ["broken-link", "exploit"]}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-15T10:32:54.702711Z", "id": "CVE-2026-12218", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-15T10:33:14.008Z"}}]}}

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