A critical remote code execution vulnerability exists in D-Link DIR-825M 1.1.8 routers, caused by a stack-based buffer overflow in the LTE Module Firmware Upgrade handler (formLtefotaUpgradeFibocom). An attacker can remotely manipulate the fota_url parameter to trigger the overflow, with a public exploit already available, making this an immediate risk to exposed devices.
Updated Sep 1, 2026 · CVSS 9.9