CVE-2025-14859
Published: Apr 7, 2026
Modified: Apr 7, 2026
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Semtech | LR1110 | affected 0 - < BL2 FW 0x1001 |
Semtech | LR1120 | affected 0 - < BL2 FW 0x2001 |
Semtech | LR1121 | affected 0 - < BL2 FW 0x2101 |
Weaknesses (CWE)
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