CVE-2026-12219
Yealink SIP-T46U Web FastCGI Service start mod_diagnose.CommandShellByType command injection
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 5.3EPSS 1.1%KEV nãoPoC públicaNuclei —Metasploit —Patch —
Lifecycle
15 Jun 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
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
Affected products
Yealink · SIP-T46Upublic PoCs found — 1
cve_referencecdn2.v50to.cc/T46U/T46U_mod_diagnose_CommandShellByType_iperf_time_cmd_injection.zipunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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