{
    "id": "CVE-2011-1956",
    "published": "2011-06-06 19:55:02",
    "last_modified": "2026-06-16 23:30:27",
    "cvss_score": "4.3",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
    "cwe": null,
    "description": "The bytes_repr_len function in Wireshark 1.4.5 uses an incorrect pointer argument, which allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via arbitrary TCP traffic.",
    "epss_score": "0.05852",
    "epss_percentile": "0.92961",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-01 18:17:11",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "wireshark",
            "product": "wireshark"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "35873",
            "title": "Wireshark 1.4.5 - 'bytes_repr_len()' Null Pointer Dereference Denial of Service",
            "date": "2011-06-17",
            "url": "https://www.exploit-db.com/exploits/35873"
        }
    ],
    "refs_list": [
        "http://openwall.com/lists/oss-security/2011/05/31/19",
        "http://openwall.com/lists/oss-security/2011/06/01/9",
        "http://secunia.com/advisories/44449",
        "http://www.wireshark.org/docs/relnotes/wireshark-1.4.6.html",
        "http://www.wireshark.org/news/20110418.html",
        "https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5837",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/67789",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14943",
        "http://openwall.com/lists/oss-security/2011/05/31/19",
        "http://openwall.com/lists/oss-security/2011/06/01/9",
        "http://secunia.com/advisories/44449",
        "http://www.wireshark.org/docs/relnotes/wireshark-1.4.6.html",
        "http://www.wireshark.org/news/20110418.html",
        "https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5837",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/67789",
        "https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A14943"
    ]
}