CVE-2025-14858: Semtech LR11xx Encrypted Firmware Disclosure
The Semtech LR11xx LoRa transceivers running early versions of firmware contains an information disclosure vulnerability in its firmware validation functionality. When a host issues a firmware validity check command via the SPI interface, the device decrypts the provided encrypted firmware package block-by-block to validate its integrity. However, the last decrypted firmware block remains uncleared in memory after the validation process completes. An attacker with access to the SPI interface can subsequently issue memory read commands to retrieve the decrypted firmware contents from this residual memory, effectively bypassing the firmware encryption protection mechanism. The attack requires physical access to the device's SPI interface.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-14858?
CVE-2025-14858 has been identified as an information disclosure vulnerability.
How do I fix CVE-2025-14858?
To mitigate CVE-2025-14858, update to the latest version of the Semtech LR11xx firmware that addresses this vulnerability.
What devices are affected by CVE-2025-14858?
CVE-2025-14858 affects early versions of firmware on Semtech LR11xx LoRa transceivers.
What type of vulnerability is CVE-2025-14858?
CVE-2025-14858 is characterized as an information disclosure vulnerability in firmware validation.
What can attackers gain from exploiting CVE-2025-14858?
Exploiting CVE-2025-14858 could allow attackers to access sensitive information contained within the firmware.