Heap-based Buffer Overflow in Wireshark_CVE-2026-5402

{
    "lastseen": "",
    "description": "TLS protocol dissector heap overflow in Wireshark 4.6.0 to 4.6.4 allows denial of service and possible code execution",
    "published": "2026-04-30T05:39:14.217Z",
    "modified": "2026-04-30T05:39:14.217Z",
    "type": "cve",
    "title": "Heap-based Buffer Overflow in Wireshark",
    "source": "GitLab",
    "references": "https://www.wireshark.org/security/wnpa-sec-2026-14.html\nhttps://gitlab.com/wireshark/wireshark/-/issues/21090",
    "id": "CVE-2026-5402",
    "bulletinFamily": "",
    "cwe": [
        "CWE-122"
    ],
    "cvelist": null,
    "sourceData": "Wireshark Foundation Wireshark 4.6.0",
    "sourceHref": "",
    "cvss": {
        "score": 8.8,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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": "Wireshark",
    "version": "4.6.0",
    "vendor": "Wireshark Foundation",
    "ai_description": "Heap-based buffer overflow in Wireshark's TLS protocol dissector allows denial of service and possible code execution",
    "ai_severity": "High",
    "ai_vendor": "Wireshark Foundation",
    "ai_product": "Wireshark",
    "ai_version": "4.6.0 to 4.6.4",
    "ai_score": 8.8
}