CVE-2026-22212: Tinyos

Medium severity, CVSS 4.8. EPSS: 0.1% chance of exploitation in the next 30 days.

TinyOS versions up to and including 2.1.2 contain a stack-based buffer overflow vulnerability in the mcp2200gpio utility. The vulnerability is caused by unsafe use of strcpy() and strcat() functions when constructing device paths during automatic device discovery. A local attacker can exploit this by creating specially crafted filenames under /dev/usb/, leading to stack memory corruption and application crashes.

Affected products

• Tinyos Tinyos: up to and including 2.1.2

Published 2026-01-12. Last modified 2026-07-14.