GeoVision GV-VMS V20 WebCam Server Login stack overflow vulnerability_CVE-2026-7372

{
    "lastseen": "",
    "description": "A stack overflow vulnerability exists in the WebCam Server Login functionality of GeoVision GV-VMS V20 20.0.2. A specially crafted HTTP request can lead to an arbitrary code execution. An attacker can make an unauthenticated HTTP request to trigger this vulnerability.\n\n#### Stack-overflow via unconstrained sscanf\n\nThe call to `sscanf` at [1] to split the `Buffer` variable into the `username` and `password` variables doesn't limit the size of the extracted content to match the destination buffers' sizes. In this case, if either the username or password decoded from the authorization string exceeds `40` characters (the size the stack variables  `username` and `password`) then a stack overflow will occur. \n\n\n\nThe data is controlled by an attacker, but sronger constraints (e.g. no null bytes) may make exploitation harder. A successful attack could  lead to full code execution as SYSTEM on the machine running the service.",
    "published": "2026-05-04T00:47:36.651Z",
    "modified": "2026-05-04T00:47:36.651Z",
    "type": "cve",
    "title": "GeoVision GV-VMS V20 WebCam Server Login stack overflow vulnerability",
    "source": "GV",
    "references": "https://www.geovision.com.tw/cyber_security.php\nhttps://talosintelligence.com/vulnerability_reports/",
    "id": "CVE-2026-7372",
    "bulletinFamily": "",
    "cwe": [
        "CWE-787"
    ],
    "cvelist": null,
    "sourceData": "GeoVision Inc. GV-VMS V20.0.2 20.0.2",
    "sourceHref": "",
    "cvss": {
        "score": 9,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
        "version": "3.1"
    },
    "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": "GV-VMS V20.0.2",
    "version": "20.0.2",
    "vendor": "GeoVision Inc.",
    "ai_description": "Stack overflow vulnerability in GeoVision GV-VMS V20 WebCam Server Login functionality via unconstrained sscanf, allowing arbitrary code execution",
    "ai_severity": "Critical",
    "ai_vendor": "GeoVision Inc.",
    "ai_product": "GV-VMS",
    "ai_version": "20.0.2",
    "ai_score": 9
}