{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-12222: Yealink SIP-T46U Web FastCGI Service bttest mod_webd.BlueToothTest stack-based overflow","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-12222","status":"final","version":"1","initial_release_date":"2026-06-15T05:15:09.045Z","current_release_date":"2026-06-15T05:15:09.045Z","revision_history":[{"date":"2026-06-15T05:15:09.045Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"A vulnerability was determined in Yealink SIP-T46U 108.86.0.118. Affected is the function mod_webd.BlueToothTest of the file /api/inner/bttest of the component Web FastCGI Service. Executing a manipulation of the argument btMac/pin/reserved can lead to stack-based buffer overflow. The attack needs to be done within the local network. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-12222 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-12222"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-12222"},{"category":"external","summary":"VDB-370865 | Yealink SIP-T46U Web FastCGI Service bttest mod_webd.BlueToothTest stack-based overflow","url":"https://vuldb.com/vuln/370865"},{"category":"external","summary":"VDB-370865 | CTI Indicators (IOB, IOC, IOA)","url":"https://vuldb.com/vuln/370865/cti"},{"category":"external","summary":"CVE-2026-12222 | CVE Analysis and Report","url":"https://vuldb.com/cve/CVE-2026-12222"},{"category":"external","summary":"Submit #834602 | yealink T46U 108.86.0.118 Stack-based Buffer Overflow","url":"https://vuldb.com/submit/834602"},{"category":"external","summary":"cdn2.v50to.cc","url":"http://cdn2.v50to.cc/T46U/T46U_mod_webd_BlueToothTest_off_by_one.zip"}]},"product_tree":{"branches":[{"category":"vendor","name":"Yealink","branches":[{"category":"product_name","name":"SIP-T46U","branches":[{"category":"product_version","name":"108.86.0.118","product":{"name":"Yealink SIP-T46U 108.86.0.118","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:yealink:sip-t46u:108.86.0.118:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-12222","title":"Yealink SIP-T46U Web FastCGI Service bttest mod_webd.BlueToothTest stack-based overflow","notes":[{"category":"description","text":"A vulnerability was determined in Yealink SIP-T46U 108.86.0.118. Affected is the function mod_webd.BlueToothTest of the file /api/inner/bttest of the component Web FastCGI Service. Executing a manipulation of the argument btMac/pin/reserved can lead to stack-based buffer overflow. The attack needs to be done within the local network. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v4":{"version":"4.0","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","baseScore":8.6,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}