CVE-2025-14859 — Semtech LR11xx Secure Boot Bypass
The Semtech LR11xx LoRa transceivers implement secure boot functionality using digital signatures to authenticate firmware. However, the implementation uses a non-standard crypt…
Published: 2026-04-07 · CVSS: 7.0 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7