CVE-2026-12222CWE-119CWE-121

Yealink SIP-T46U Web FastCGI Service bttest mod_webd.BlueToothTest stack-based overflow

High · published June 15, 2026

CVSS v4.0
8.6
EPSS
0%
Percentile
29.8
In the wild
Unconfirmed
What it is

A vulnerability was determined in Yealink SIP-T46U 108.86.0.118. Affected is the function mod_webd.BlueToothTest of the file /api/inner/bttest of the component Web FastCGI Service. Executing a manipulation of the argument btMac/pin/reserved can lead to stack-based buffer overflow. The attack needs to be done within the local network. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure and is working on a patch to fix it.

The record
Technical detail
CVSS v4.0
8.6 · HIGH
Vector
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS
0.00371 · 29.8th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-121 · Stack-based Buffer Overflow
Published
2026-06-15T05:15Z
EPSS history
Timeline
  • 15 JUN 05:15Z
    Yealink SIP-T46U Web FastCGI Service bttest mod_webd.BlueToothTest stack-based overflow
    cvelistv5