{
    "id": "CVE-2009-2055",
    "published": "2009-08-19 17:30:01",
    "last_modified": "2026-06-16 23:08:40",
    "cvss_score": "5.9",
    "cvss_severity": "MEDIUM",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
    "cwe": "CWE-20",
    "description": "Cisco IOS XR 3.4.0 through 3.8.1 allows remote attackers to cause a denial of service (session reset) via a BGP UPDATE message with an invalid attribute, as demonstrated in the wild on 17 August 2009.",
    "epss_score": "0.03314",
    "epss_percentile": "0.88122",
    "kev": 1,
    "kev_due": "2022-04-15",
    "has_exploit": 0,
    "updated_at": "2026-09-26 18:16:46",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-04-15."
    },
    "products": [
        {
            "vendor": "cisco",
            "product": "ios_xr"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2009-2055",
        "date_added": "2022-03-25",
        "due_date": "2022-04-15",
        "vendor": "Cisco",
        "product": "IOS XR",
        "name": "Cisco IOS XR Border Gateway Protocol (BGP) Denial-of-Service Vulnerability",
        "ransomware": 0
    },
    "exploits": [],
    "refs_list": [
        "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html",
        "http://securitytracker.com/id?1022739",
        "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml",
        "http://mailman.nanog.org/pipermail/nanog/2009-August/012719.html",
        "http://securitytracker.com/id?1022739",
        "http://www.cisco.com/en/US/products/products_security_advisory09186a0080af150f.shtml",
        "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-2055"
    ]
}