CVE-2026-12219
Yealink SIP-T46U Web FastCGI Service start mod_diagnose.CommandShellByType command injection
- State
- Published
- Severity
- 5.3 Medium
- Published
- Jun 15, 2026
- Updated
- Jun 27, 2026
- Reserved
- Jun 14, 2026
Description
A flaw has been found in Yealink SIP-T46U 108.86.0.118. The impacted element is the function mod_diagnose.CommandShellByType of the file /api/diagnosis/start of the component Web FastCGI Service. This manipulation of the argument Time causes command injection. The attack can be initiated remotely. The exploit has been published and may be used. Upgrading to version 108.87.0.23 is sufficient to resolve this issue. It is advisable to upgrade the affected component.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 6.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C | VulDB |
| 3.0 | 6.3 Medium | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C | VulDB |
| 2.0 | 6.5 Medium | AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
SIP-T46UYealink |
|
References
- VDB-370862 | Yealink SIP-T46U Web FastCGI Service start mod_diagnose.CommandShellByType command injectionvdb-entrytechnical-description
- VDB-370862 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- CVE-2026-12219 | CVE Analysis and Reportthird-party-advisory
- Submit #834204 | yealink T46U 108.86.0.118 Command Injectionthird-party-advisory
- http://cdn2.v50to.cc/T46U/T46U_mod_diagnose_CommandShellByType_iperf_time_cmd_injection.zipbroken-linkexploit
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