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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. The vendor was contacted early about this disclosure but did not respond in any way.

PUBLISHED Reserved 2026-06-14 | Published 2026-06-15 | Updated 2026-06-15 | Assigner VulDB




MEDIUM: 5.3CVSS: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
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

Command Injection

Injection

Product status

108.86.0.118
affected

Timeline

2026-06-14:Advisory disclosed
2026-06-14:VulDB entry created
2026-06-14:VulDB entry last update

Credits

CookedMelon (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/370862 (VDB-370862 | Yealink SIP-T46U Web FastCGI Service start mod_diagnose.CommandShellByType command injection) vdb-entry technical-description

vuldb.com/vuln/370862/cti (VDB-370862 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/cve/CVE-2026-12219 (CVE-2026-12219 | CVE Analysis and Report) third-party-advisory

vuldb.com/submit/834204 (Submit #834204 | yealink T46U 108.86.0.118 Command Injection) third-party-advisory

cdn2.v50to.cc/...andShellByType_iperf_time_cmd_injection.zip broken-link exploit

cve.org (CVE-2026-12219)

nvd.nist.gov (CVE-2026-12219)

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