{
    "id": "CVE-2009-2620",
    "published": "2009-07-29 17:30:01",
    "last_modified": "2026-06-16 23:09:51",
    "cvss_score": "5.0",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
    "cwe": "CWE-20",
    "description": "src/remote/server.cpp in fbserver.exe in Firebird SQL 1.5 before 1.5.6, 2.0 before 2.0.6, 2.1 before 2.1.3, and 2.5 before 2.5 Beta 2 allows remote attackers to cause a denial of service (daemon crash) via a malformed op_connect_request message that triggers an infinite loop or NULL pointer dereference.",
    "epss_score": "0.08631",
    "epss_percentile": "0.94928",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-28 18:17:08",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "firebirdsql",
            "product": "firebird"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "9295",
            "title": "Firebird SQL - op_connect_request main listener shutdown",
            "date": "2009-07-28",
            "url": "https://www.exploit-db.com/exploits/9295"
        }
    ],
    "refs_list": [
        "http://tracker.firebirdsql.org/browse/CORE-2563",
        "http://www.coresecurity.com/content/firebird-sql-dos",
        "http://www.exploit-db.com/exploits/9295",
        "http://www.securityfocus.com/bid/35842",
        "https://bugzilla.redhat.com/show_bug.cgi?id=514463",
        "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01341.html",
        "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01370.html",
        "http://tracker.firebirdsql.org/browse/CORE-2563",
        "http://www.coresecurity.com/content/firebird-sql-dos",
        "http://www.exploit-db.com/exploits/9295",
        "http://www.securityfocus.com/bid/35842",
        "https://bugzilla.redhat.com/show_bug.cgi?id=514463",
        "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01341.html",
        "https://www.redhat.com/archives/fedora-package-announce/2009-August/msg01370.html"
    ]
}