CVE-2026-12219: Yealink SIP-T46U Web FastCGI Service start mod_diagnose.CommandShellByType command injection
A flaw has been found in Yealink SIP-T46U 108.86.0.118. The impacted element is the function moddiagnose.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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Yealink SIP-T46U Web FastCGI Service (mod_diagnose.CommandShellByType in /api/diagnosis/start)to a version that resolves this vulnerability.Fixed in 108.87.0.23
Event History
Frequently Asked Questions
What is the severity of CVE-2026-12219?
CVE-2026-12219 has a medium severity rating of 6.3.
What type of vulnerability is CVE-2026-12219?
CVE-2026-12219 is classified as a command injection vulnerability.
How does CVE-2026-12219 affect the Yealink SIP-T46U?
CVE-2026-12219 allows remote attackers to inject commands through the mod_diagnose.CommandShellByType function.
What versions of Yealink products are impacted by CVE-2026-12219?
CVE-2026-12219 affects Yealink SIP-T46U version 108.86.0.118.
How can I mitigate CVE-2026-12219?
To mitigate CVE-2026-12219, ensure that your Yealink SIP-T46U device is updated to the latest firmware version provided by Yealink.