Tenda G300-F Command Injection via formSetWanDiag_CVE-2026-25857

{
    "lastseen": "",
    "description": "Tenda G300-F router firmware versio 16.01.14.2 and prior contain an OS command injection vulnerability in the WAN diagnostic functionality (formSetWanDiag). The implementation constructs a shell command that invokes curl and incorporates attacker-controlled input into the command line without adequate neutralization. As a result, a remote attacker with access to the affected management interface can inject additional shell syntax and execute arbitrary commands on the device with the privileges of the management process.",
    "published": "2026-02-07T21:41:41.340Z",
    "modified": "2026-02-07T21:41:41.340Z",
    "type": "cve",
    "title": "Tenda G300-F Command Injection via formSetWanDiag",
    "source": "VulnCheck",
    "references": "https://blog.evan.lat/blog/cve-2026-25857/\nhttps://www.tendacn.com/material/show/736333682028613\nhttps://www.vulncheck.com/advisories/tenda-g300-f-command-injection-via-formsetwandiag",
    "id": "CVE-2026-25857",
    "bulletinFamily": "",
    "cwe": [
        "CWE-78"
    ],
    "cvelist": null,
    "sourceData": "Shenzhen Tenda Technology Tenda G300-F 0",
    "sourceHref": "",
    "cvss": {
        "score": 8.6,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/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": "Tenda G300-F",
    "version": "0",
    "vendor": "Shenzhen Tenda Technology",
    "ai_description": "OS command injection vulnerability in WAN diagnostic functionality",
    "ai_severity": "High",
    "ai_vendor": "Shenzhen Tenda Technology",
    "ai_product": "Tenda G300-F",
    "ai_version": "16.01.14.2 and prior",
    "ai_score": 8.6
}