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. Upgrading to version 108.87.0.23 addresses this issue. Upgrading the affected component is recommended. The vendor explains: "It has been fixed (...) for our technical support branch. However, please note that this specific support branch firmware is not publicly released yet."
AI Analysis
Technical Summary
This vulnerability affects Yealink SIP-T46U version 108.86.0.118. The mod_webd.TFTPUploadIperf function in the Web FastCGI Service component improperly handles the ip/port argument, allowing an attacker with local network access to perform command injection. The vendor has fixed the issue in a technical support branch firmware version 108.87.0.23; however, this firmware is not publicly available yet. The CVSS 4.0 score is 5.1 (medium severity), reflecting local attack vector with low complexity and no user interaction required.
Potential Impact
Successful exploitation allows an attacker on the local network to execute arbitrary commands on the affected device, potentially compromising device integrity and confidentiality. The vulnerability is limited to local network access and requires low privileges. No known exploits are currently reported in the wild.
Mitigation Recommendations
Upgrade to firmware version 108.87.0.23 or later once it is publicly released to address this vulnerability. Until the fix is available, restrict local network access to trusted users and devices to reduce risk. Monitor vendor advisories for the official public release of the patched firmware.
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. Upgrading to version 108.87.0.23 addresses this issue. Upgrading the affected component is recommended. The vendor explains: "It has been fixed (...) for our technical support branch. However, please note that this specific support branch firmware is not publicly released yet."
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 version 108.86.0.118. The mod_webd.TFTPUploadIperf function in the Web FastCGI Service component improperly handles the ip/port argument, allowing an attacker with local network access to perform command injection. The vendor has fixed the issue in a technical support branch firmware version 108.87.0.23; however, this firmware is not publicly available yet. The CVSS 4.0 score is 5.1 (medium severity), reflecting local attack vector with low complexity and no user interaction required.
Potential Impact
Successful exploitation allows an attacker on the local network to execute arbitrary commands on the affected device, potentially compromising device integrity and confidentiality. The vulnerability is limited to local network access and requires low privileges. No known exploits are currently reported in the wild.
Mitigation Recommendations
Upgrade to firmware version 108.87.0.23 or later once it is publicly released to address this vulnerability. Until the fix is available, restrict local network access to trusted users and devices to reduce risk. Monitor vendor advisories for the official public release of the patched firmware.
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: 06/15/2026, 06:05:54 UTC
Last enriched: 06/27/2026, 20:58:36 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 101
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