CVE-2026-122118

High CVSS 7.4

Published 2026-11-04 · last changed 2026-11-04

The fix

We hold no Microsoft remediation data for CVE-2026-122118, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

In certain Yealink products before 2026-04-15, when the Wi-Fi AP function is enabled, a default 8-digit numeric PSK with insufficient strength is used. Attackers can exploit this weakness via brute-force attacks to gain unauthorized network access and intercept Wi-Fi traffic.

Sources

NVD record for CVE-2026-122118

CVSS vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N