RIOT OS <= 2026.01-devel-317 Stack-Based Buffer Overflow in tapslip6 Utility_CVE-2026-22213

{
    "lastseen": "",
    "description": "RIOT OS versions up to and including 2026.01-devel-317 contain a stack-based buffer overflow vulnerability in the tapslip6 utility. The vulnerability is caused by unsafe string concatenation in the devopen() function, which constructs a device path using unbounded user-controlled input. The utility uses strcpy() and strcat() to concatenate the fixed prefix '/dev/' with a user-supplied device name provided via the -s command-line option without bounds checking. This allows an attacker to supply an excessively long device name and overflow a fixed-size stack buffer, leading to process crashes and memory corruption.",
    "published": "2026-01-12T23:03:05.461Z",
    "modified": "2026-01-12T23:03:05.461Z",
    "type": "cve",
    "title": "RIOT OS <= 2026.01-devel-317 Stack-Based Buffer Overflow in tapslip6 Utility",
    "source": "VulnCheck",
    "references": "https://seclists.org/fulldisclosure/2026/Jan/15\nhttps://www.riot-os.org/\nhttps://github.com/RIOT-OS/RIOT\nhttps://www.vulncheck.com/advisories/riot-os-stack-based-buffer-overflow-in-tapslip6-utility",
    "id": "CVE-2026-22213",
    "bulletinFamily": "",
    "cwe": [
        "CWE-121"
    ],
    "cvelist": null,
    "sourceData": "RIOT RIOT OS 0",
    "sourceHref": "",
    "cvss": {
        "score": 2.4,
        "severity": "LOW",
        "vector": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
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        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "RIOT OS",
    "version": "0",
    "vendor": "RIOT",
    "ai_description": "",
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    "ai_score": 0
}