What is CVE-2026-12219?

CVE-2026-12219 is a medium-severity vulnerability in Yealink Sip-T46u, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-06-15.

How severe is CVE-2026-12219?

Medium severity. CVSS v3 base score is 6.3 out of 10.

RCE in Yealink Sip-T46u

CVE-2026-12219

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.

EPSS: 0.011 (62.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Yealink Sip-t46u — versions 108.86.0.118, 108.87.0.23

Weakness classification (CWE)

References

cna@vuldb.com (exploit, broken-link)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)

Frequently asked questions

What is CVE-2026-12219?: CVE-2026-12219 is a medium-severity vulnerability in Yealink Sip-T46u, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 6.3/10. Published 2026-06-15.
How severe is CVE-2026-12219?: Medium severity. CVSS v3 base score is 6.3 out of 10.