TinyOS <= 2.1.2 Stack-Based Buffer Overflow in mcp2200gpio_CVE-2026-22212

{
    "lastseen": "",
    "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": "2026-01-12T23:02:45.973Z",
    "modified": "2026-01-12T23:02:45.973Z",
    "type": "cve",
    "title": "TinyOS <= 2.1.2 Stack-Based Buffer Overflow in mcp2200gpio",
    "source": "VulnCheck",
    "references": "https://seclists.org/fulldisclosure/2026/Jan/14\nhttps://github.com/tinyos/tinyos-main\nhttps://www.vulncheck.com/advisories/tinyos-stack-based-buffer-overflow-in-mcp2200gpio",
    "id": "CVE-2026-22212",
    "bulletinFamily": "",
    "cwe": [
        "CWE-121"
    ],
    "cvelist": null,
    "sourceData": "TinyOS TinyOS 0",
    "sourceHref": "",
    "cvss": {
        "score": 4.8,
        "severity": "MEDIUM",
        "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",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "TinyOS",
    "version": "0",
    "vendor": "TinyOS",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}