CVE-2026-12221 - CERT CVE
ID CVE-2026-12221
Sažetak A vulnerability was found in Yealink SIP-T46U 108.86.0.118. This impacts the function sprintf of the file /api/upgrade/upgrade of the component Firmware Chunk Upload Handler. Performing a manipulation of the argument uid/start_offset results in stack-based buffer overflow. The attack needs to be approached within the local network. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Reference
CVSS
Base: 7.7
Impact: 10.0
Exploitability:5.1
Pristup
VektorSloženostAutentikacija
ADJACENT_NETWORK LOW SINGLE
Impact
PovjerljivostCjelovitostDostupnost
COMPLETE COMPLETE COMPLETE
CVSS vektor AV:A/AC:L/Au:S/C:C/I:C/A:C
Zadnje važnije ažuriranje 15-06-2026 - 20:42
Objavljeno 15-06-2026 - 06:16