What is CVE-2026-12223?

CVE-2026-12223 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: 5.5/10. Published 2026-06-15.

How severe is CVE-2026-12223?

Medium severity. CVSS v3 base score is 5.5 out of 10.

RCE in Yealink Sip-t46u

CVE-2026-12223

A vulnerability was identified in Yealink SIP-T46U 108.86.0.118. Affected by this vulnerability is the function mod_webd.TFTPUploadIperf of the file /api/inner/tftpuploadiperf of the component Web FastCGI Service. The manipulation of the a…

EPSS: 0.012 (64.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:A/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-2026-12223?: CVE-2026-12223 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: 5.5/10. Published 2026-06-15.
How severe is CVE-2026-12223?: Medium severity. CVSS v3 base score is 5.5 out of 10.