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Description

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.

PUBLISHED Reserved 2026-01-06 | Published 2026-01-12 | Updated 2026-01-13 | Assigner VulnCheck




MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Problem types

CWE-121 Stack-based Buffer Overflow

Product status

Default status
unknown

Any version
affected

Credits

Ron Edgerson finder

References

seclists.org/fulldisclosure/2026/Jan/14 technical-description exploit

github.com/tinyos/tinyos-main product

www.vulncheck.com/...ck-based-buffer-overflow-in-mcp2200gpio third-party-advisory

cve.org (CVE-2026-22212)

nvd.nist.gov (CVE-2026-22212)

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