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 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
108.87.50.1 affected —

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Project Subscriptions

Vendors Products
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Sip-t46u Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://cdn2.v50to.cc/T46U/T46U_beforewifitest_stack_overflow.zip cve-icon cve-icon
https://vuldb.com/cve/CVE-2026-12218 cve-icon cve-icon
https://vuldb.com/submit/834193 cve-icon cve-icon
https://vuldb.com/vuln/370861 cve-icon cve-icon
https://vuldb.com/vuln/370861/cti cve-icon cve-icon
History

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

Type Values Removed Values Added
Description 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 but did not respond in any way.
Title Yealink SIP-T46U Web FastCGI Service beforewifitest StartReportInformation 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: 2026-06-15T04:15:10.808Z

Reserved: 2026-06-14T13:54:11.247Z

Link: CVE-2026-12218

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-15T06:16:22.673

Modified: 2026-06-15T06:16:22.673

Link: CVE-2026-12218

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses