CVE-2026-12220
Yealink SIP-T46U Firmware Chunk Upload handler accupgradebychunk mod_upgrade.SparePartsUpload stack-based overflow
Vexday Risk Score
41Atención
Decisión SSVC (CISA)
Attend
PoC disponible → seguir de cerca
CVSS 8.6EPSS 0.4%KEV nãoPoC públicaNuclei —Metasploit —Patch referenciado
Ciclo de vida
15 jun 2026Publicada en NVD
Recomendación: Planificar corrección próxima — ya existe PoC pública.
A vulnerability has been found in Yealink SIP-T46U 108.86.0.118. This affects the function mod_upgrade.SparePartsUpload of the file /api/upgrade/accupgradebychunk of the component Firmware Chunk Upload handler. Such manipulation of the argument uid leads to stack-based buffer overflow. The attack can only be initiated within the local network. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure and is working on a patch to fix it.
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
Productos afectados
Yealink · SIP-T46UPoCs públicas encontradas — 1
cve_referencecdn2.v50to.cc/T46U/T46U_mod_upgrade_SparePartsUpload_stack_overflow.zipno verificado⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
¿Quieres saber si tu infraestructura está expuesta a esto?
Hablar con TrueHacking →