CVE-2026-22212

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.

CVSS v4.0

4.8 MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS

0.12% chance of exploitation in the next 30 days, 2th percentile

Published

2026-01-12

Updated

2026-07-14

Proof-of-concept exploits (1)

• https://seclists.org/fulldisclosure/2026/Jan/14

References

• CVE Record
• NVD entry

Related

• CVE-2026-22211
• CVE-2026-22213
• CVE-2026-2221
• CVE-2026-22214
• CVE-2026-22208
• CVE-2026-22218