CVE-2025-14859
Semtech LR11xx Secure Boot Bypass
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-327 |
| Vendor | semtech |
| Product | lr1110 |
| Published | Apr 7, 2026 |
| Last Updated | Apr 7, 2026 |
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Affected Versions
Semtech / LR1110
0 < BL2 FW 0x1001
Semtech / LR1120
0 < BL2 FW 0x2001
Semtech / LR1121
0 < BL2 FW 0x2101