CVE-2026-12223
Received Received - Intake
Command Injection in Yealink SIP-T46U

Publication date: 2026-06-15

Last updated on: 2026-06-15

Assigner: VulDB

Description
A vulnerability was identified in Yealink SIP-T46U 108.86.0.118. Affected by this vulnerability is the function mod_webd.TFTPUploadIperf of the file /api/inner/tftpuploadiperf of the component Web FastCGI Service. The manipulation of the argument ip/port leads to command injection. The attack needs to be initiated within the local network. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Meta Information
Published
2026-06-15
Last Modified
2026-06-15
Generated
2026-06-15
AI Q&A
2026-06-15
EPSS Evaluated
N/A
NVD
CVE-2026-12223
EUVD
EUVD-2026-36696
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
yealink sip-t46u 108.86.0.118
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
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Executive Summary

This vulnerability exists in the Yealink SIP-T46U device, specifically in the mod_webd.TFTPUploadIperf function of the Web FastCGI Service component. It involves the manipulation of the ip/port argument in the /api/inner/tftpuploadiperf file, which leads to command injection. An attacker needs to be within the local network to exploit this vulnerability, and the exploit code is publicly available.

Impact Analysis

The vulnerability allows an attacker on the local network to perform command injection via the affected function. This could enable the attacker to execute arbitrary commands on the device, potentially leading to unauthorized control, disruption of service, or further compromise of the network.

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