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.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Adjacent Network

Access Complexity Low

Authentication Single

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Yealink SIP-T46U affected
Version Status Constraints
108.86.0.118 affected —

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://cdn2.v50to.cc/T46U/T46U_mod_webd_BlueToothTest_off_by_one.zip cve-icon cve-icon
https://vuldb.com/cve/CVE-2026-12222 cve-icon cve-icon
https://vuldb.com/submit/834602 cve-icon cve-icon
https://vuldb.com/vuln/370865 cve-icon cve-icon
https://vuldb.com/vuln/370865/cti cve-icon cve-icon
History

Mon, 15 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 15 Jun 2026 06:00:00 +0000

Type Values Removed Values Added
Description 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 Yealink SIP-T46U Web FastCGI Service bttest mod_webd.BlueToothTest stack-based overflow
First Time appeared Yealink
Yealink sip-t46u
Weaknesses CWE-119
CWE-121
CPEs cpe:2.3:a:yealink:sip-t46u:*:*:*:*:*:*:*:*
Vendors & Products Yealink
Yealink sip-t46u
References
Metrics cvssV2_0

{'score': 7.7, 'vector': 'AV:A/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 8, 'vector': 'CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 8, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 8.6, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-06-15T13:11:18.614Z

Reserved: 2026-06-14T13:54:21.407Z

Link: CVE-2026-12222

cve-icon Vulnrichment

Updated: 2026-06-15T13:11:14.975Z

cve-icon NVD

Status : Received

Published: 2026-06-15T06:16:24.413

Modified: 2026-06-15T06:16:24.413

Link: CVE-2026-12222

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-15T07:30:31Z

Weaknesses