EUVD-2026-66556

The LoRaWAN TS004 Fragmented Data Block Transport handler fragtransportpackagecallback in subsys/lorawan/services/fragtransport.c parses downlink command bytes without validating that enough payload bytes remain before each access. The loop's only bound is rxpos fragsize, capped at...

CVE-2026-13480 Out-of-bounds read in LoRaWAN fragmented data block transport (FUOTA) downlink handler

The LoRaWAN TS004 Fragmented Data Block Transport handler fragtransportpackagecallback in subsys/lorawan/services/fragtransport.c parses downlink command bytes without validating that enough payload bytes remain before each access. The loop's only bound is rxpos fragsize, capped at...

CVE-2026-13480

CVE-2026-13480 is an out-of-bounds read in the Zephyr RTOS LoRaWAN TS004 Fragmented Data Block Transport (FUOTA) downlink handler (frag_transport_package_callback() in subsys/lorawan/services/frag_transport.c). The handler fails to validate remaining payload length before casting to a 10-byte set...