CVE-2021-27421: Nxp Mcuxpresso Software Development Kit

Critical severity, CVSS 9.8. EPSS: 0.9% chance of exploitation in the next 30 days.

NXP MCUXpresso SDK versions prior to 2.8.2 are vulnerable to integer overflow in SDK_Malloc function, which could allow to access memory locations outside the bounds of a specified array, leading to unexpected behavior such segmentation fault when assigning a particular block of memory from the heap via malloc.

Affected products

• Nxp Mcuxpresso Software Development Kit: before 2.8.2 (fixed in 2.8.2)

Published 2022-05-03. Last modified 2026-06-17.