PT-2026-30994 · Semtech · Lora Lr11Xxx

Published 2026-04-07 · Updated 2026-04-08 · CVE-2025-14857

Positive Technologies (AI Summary)

CVSS v4.0

5.4

Medium

Base vector

AV:P/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:N/AU:N/R:A/V:D/RE:M

Name of the Vulnerable Software and Affected Versions Semtech LoRa LR11xxx transceivers (affected versions not specified)

Description An improper access control vulnerability exists in Semtech LoRa LR11xxx transceivers running early versions of firmware. A memory write command accessible via the physical SPI interface fails to enforce write protection on the program call stack. An attacker with physical access to the SPI interface can overwrite stack memory to hijack program control flow and achieve limited arbitrary code execution. The impact is limited to the active attack session as the device's secure boot mechanism prevents persistent firmware modification, the crypto engine isolates cryptographic keys, and modifications are lost upon reboot or loss of physical access.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-123

Related Identifiers

CVE-2025-14857

Affected Products

Lora Lr11Xxx

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2025-14857 · Security Note
• https://semtech.com/company/security/security-bulletins/sem-psa-2026-001 · Note
• https://twitter.com/CVEnew/status/2041711888984313949 · Twitter Post