Vulnerability in Semtech Lr1110

CVE-2025-14859

The Semtech LR11xx LoRa transceivers implement secure boot functionality using digital signatures to authenticate firmware. However, the implementation uses a non-standard cryptographic hashing algorithm that is vulnerable to second preimage attacks. An attacker with physical access to the device can exploit this weakness to generate a malicious firmware image with a hash collision, bypassing the secure boot verification mechanism and installing arbitrary unauthorized firmware on the device.

Vulnerability class: POODLE (CVE-2014-3566)

EPSS: 0.001 (1.5th percentile) — read the EPSS interpretation.