CVE-2023-4041: Silabs Gecko Bootloader

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'), Out-of-bounds Write, Download of Code Without Integrity Check vulnerability in Silicon Labs Gecko Bootloader on ARM (Firmware Update File Parser modules) allows Code Injection, Authentication Bypass.This issue affects "Standalone" and "Application" versions of Gecko Bootloader.

Affected products

• Silabs Gecko Bootloader: before 4.2.4 (fixed in 4.2.4); from 4.3.0, before 4.3.2 (fixed in 4.3.2)

Published 2023-08-23. Last modified 2026-06-17.