Totolink N300RH POST Request cstecgi.cgi setUpgradeFW buffer overflow_CVE-2026-7748

{
    "lastseen": "",
    "description": "A weakness has been identified in Totolink N300RH 3.2.4-B20220812. Affected by this issue is the function setUpgradeFW of the file /cgi-bin/cstecgi.cgi of the component POST Request Handler. Executing a manipulation of the argument FileName can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.",
    "published": "2026-05-04T08:30:14.631Z",
    "modified": "2026-05-04T08:30:14.631Z",
    "type": "cve",
    "title": "Totolink N300RH POST Request cstecgi.cgi setUpgradeFW buffer overflow",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/360923\nhttps://vuldb.com/vuln/360923/cti\nhttps://vuldb.com/submit/807202\nhttps://lavender-bicycle-a5a.notion.site/TOTOLINK-N300RH-setUpgradeFW-34553a41781f80abb1d1c627d7ff4329?pvs=73\nhttps://www.totolink.net/",
    "id": "CVE-2026-7748",
    "bulletinFamily": "",
    "cwe": [
        "CWE-120",
        "CWE-119"
    ],
    "cvelist": null,
    "sourceData": "Totolink N300RH 3.2.4-B20220812",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P",
        "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": "N300RH",
    "version": "3.2.4-B20220812",
    "vendor": "Totolink",
    "ai_description": "Buffer overflow vulnerability in Totolink N300RH via manipulation of the FileName argument in the setUpgradeFW function of the /cgi-bin/cstecgi.cgi file, allowing remote attacks.",
    "ai_severity": "High",
    "ai_vendor": "Totolink",
    "ai_product": "N300RH",
    "ai_version": "3.2.4-B20220812",
    "ai_score": 8.7
}