CVE-2021-27411: Silabs Micrium OS

Medium severity, CVSS 6.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Micrium OS Versions 5.10.1 and prior are vulnerable to integer wrap-around in functions Mem_DynPoolCreate, Mem_DynPoolCreateHW and Mem_PoolCreate. This unverified memory assignment can lead to arbitrary memory allocation, resulting in unexpected behavior such as very small blocks of memory being allocated instead of very large ones.

Affected products

• Silabs Micrium OS: up to and including 5.10.1

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