CVE-2026-22212

4.8 mediumEPSS 0.1%

Medium (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.

Severity

CVSS 4.0

4.8 medium

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

EPSS: 0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-31)
CWE: CWE-121
Published: 2026-01-12
Modified: 2026-07-14
Record from: the NVD, synced 2026-10-19

References

https://github.com/tinyos/tinyos-main
https://seclists.org/fulldisclosure/2026/Jan/14
https://www.vulncheck.com/advisories/tinyos-stack-based-buffer-overflow-in-mcp2200gpio

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