What is CVE-2026-12218?

CVE-2026-12218 is a high-severity vulnerability in Yealink Sip-t46u, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.0/10. Published 2026-06-15.

How severe is CVE-2026-12218?

High severity. CVSS v3 base score is 8.0 out of 10.

Buffer overflow in Yealink Sip-t46u

CVE-2026-12218

A vulnerability was detected in Yealink SIP-T46U 108.87.50.1. The affected element is the function StartReportInformation of the file /api/inner/beforewifitest of the component Web FastCGI Service. The manipulation of the argument port res…

Vulnerability class: Buffer Overflow

EPSS: 0.004 (28.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Yealink Sip-t46u — versions 108.87.50.1

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-2026-12218?: CVE-2026-12218 is a high-severity vulnerability in Yealink Sip-t46u, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.0/10. Published 2026-06-15.
How severe is CVE-2026-12218?: High severity. CVSS v3 base score is 8.0 out of 10.