CVE-2026-22212 MEDIUM

CVE-2026-22212: TinyOS <= 2.1.2 Stack-Based Buffer Overflow in mcp2200gpio

Vendor Tinyos
Product TinyOS
Weakness CWE-121
Published January 12, 2026
Last update January 13, 2026
View on NVD All CVEs

CVSS base score

4.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

January 12, 2026 CVE published
January 13, 2026 Record updated