{
    "id": "CVE-2007-3763",
    "published": "2007-07-18 17:30:00",
    "last_modified": "2026-06-16 22:42:41",
    "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": null,
    "description": "The IAX2 channel driver (chan_iax2) in Asterisk before 1.2.22 and 1.4.x before 1.4.8, Business Edition before B.2.2.1, AsteriskNOW before beta7, Appliance Developer Kit before 0.5.0, and s800i before 1.0.2 allows remote attackers to cause a denial of service (crash) via a crafted (1) LAGRQ or (2) LAGRP frame that contains information elements of IAX frames, which results in a NULL pointer dereference when Asterisk does not properly set an associated variable.",
    "epss_score": "0.26560",
    "epss_percentile": "0.97951",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-27 18:17:06",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "asterisk",
            "product": "asterisk"
        },
        {
            "vendor": "asterisk",
            "product": "asterisk_appliance_developer_kit"
        },
        {
            "vendor": "asterisk",
            "product": "asterisknow"
        },
        {
            "vendor": "asterisk",
            "product": "s800i_appliance"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "4249",
            "title": "Asterisk < 1.2.22/1.4.8 - IAX2 Channel Driver Remote Crash",
            "date": "2007-07-31",
            "url": "https://www.exploit-db.com/exploits/4249"
        }
    ],
    "refs_list": [
        "http://bugs.gentoo.org/show_bug.cgi?id=185713",
        "http://ftp.digium.com/pub/asa/ASA-2007-015.pdf",
        "http://secunia.com/advisories/26099",
        "http://secunia.com/advisories/29051",
        "http://security.gentoo.org/glsa/glsa-200802-11.xml",
        "http://www.debian.org/security/2007/dsa-1358",
        "http://www.novell.com/linux/security/advisories/2007_15_sr.html",
        "http://www.securityfocus.com/bid/24950",
        "http://www.securitytracker.com/id?1018407",
        "http://www.vupen.com/english/advisories/2007/2563",
        "http://bugs.gentoo.org/show_bug.cgi?id=185713",
        "http://ftp.digium.com/pub/asa/ASA-2007-015.pdf",
        "http://secunia.com/advisories/26099",
        "http://secunia.com/advisories/29051",
        "http://security.gentoo.org/glsa/glsa-200802-11.xml",
        "http://www.debian.org/security/2007/dsa-1358",
        "http://www.novell.com/linux/security/advisories/2007_15_sr.html",
        "http://www.securityfocus.com/bid/24950",
        "http://www.securitytracker.com/id?1018407",
        "http://www.vupen.com/english/advisories/2007/2563"
    ]
}