LoRa Transceiver Firmware Vulnerability in Semtech Devices
CVE-2025-14859

7HIGH

Key Information:

Vendor

Semtech

Status
Lr1110
Lr1120
Lr1121
Vendor
CVE Published:
7 April 2026

What is CVE-2025-14859?

The Semtech LR11xx LoRa transceivers experience a significant firmware vulnerability due to their use of a non-standard cryptographic hashing algorithm for secure boot functionality. This vulnerability permits a malicious actor with physical access to generate a counterfeit firmware image that matches an existing hash, effectively bypassing the secure boot verification mechanism. As a result, unauthorized firmware can be installed on affected devices, posing serious security risks.

Affected Version(s)

LR1110 0

LR1120 0

LR1121 0

References

https://www.semtech.com/company/security/security-bulleti...

CVSS V4

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Physical
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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