CVE-2026-12223: Command Injection in Yealink SIP-T46U
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.
AI Analysis
Technical Summary
This vulnerability affects Yealink SIP-T46U firmware version 108.86.0.118. It arises from improper input validation in the mod_webd.TFTPUploadIperf function of the Web FastCGI Service, allowing command injection through the ip/port parameter. Exploitation requires local network access. The vendor has not provided a fix or advisory, and no official remediation level is stated. Public exploit code exists, but no known widespread exploitation has been reported.
Potential Impact
Successful exploitation allows an attacker on the local network to execute arbitrary commands on the affected device, potentially leading to unauthorized control or disruption of the device's operation. The impact is limited by the requirement for local network access and the medium CVSS severity score.
Mitigation Recommendations
No official patch or remediation is currently available from the vendor. Since the vendor has not responded and no fix is published, users should restrict local network access to the device and monitor for suspicious activity. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-12223: Command Injection in Yealink SIP-T46U
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.
CVSS v4.0
Score 5.1medium
Affected software
cpe:2.3:a:yealink:sip-t46u:*:*:*:*:*:*:*:*AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects Yealink SIP-T46U firmware version 108.86.0.118. It arises from improper input validation in the mod_webd.TFTPUploadIperf function of the Web FastCGI Service, allowing command injection through the ip/port parameter. Exploitation requires local network access. The vendor has not provided a fix or advisory, and no official remediation level is stated. Public exploit code exists, but no known widespread exploitation has been reported.
Potential Impact
Successful exploitation allows an attacker on the local network to execute arbitrary commands on the affected device, potentially leading to unauthorized control or disruption of the device's operation. The impact is limited by the requirement for local network access and the medium CVSS severity score.
Mitigation Recommendations
No official patch or remediation is currently available from the vendor. Since the vendor has not responded and no fix is published, users should restrict local network access to the device and monitor for suspicious activity. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-06-14T13:54:23.937Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2f96421cccde5f260cd697
Added to database: 6/15/2026, 6:05:54 AM
Last enriched: 6/15/2026, 6:21:06 AM
Last updated: 6/15/2026, 8:39:36 AM
Views: 10
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