{
    "id": "CVE-2006-3121",
    "published": "2006-08-17 01:04:00",
    "last_modified": "2026-06-16 22:26:26",
    "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-399",
    "description": "The peel_netstring function in cl_netstring.c in the heartbeat subsystem in High-Availability Linux before 1.2.5, and 2.0 before 2.0.7, allows remote attackers to cause a denial of service (crash) via the length parameter in a heartbeat message.",
    "epss_score": "0.13589",
    "epss_percentile": "0.96337",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-27 18:17:05",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "high_availability_linux_project",
            "product": "heartbeat"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "28386",
            "title": "Linux-HA Heartbeat 2.0.6 - Remote Denial of Service",
            "date": "2006-08-13",
            "url": "https://www.exploit-db.com/exploits/28386"
        }
    ],
    "refs_list": [
        "http://secunia.com/advisories/21505",
        "http://secunia.com/advisories/21511",
        "http://secunia.com/advisories/21518",
        "http://secunia.com/advisories/21521",
        "http://secunia.com/advisories/21629",
        "http://security.gentoo.org/glsa/glsa-200608-23.xml",
        "http://www.debian.org/security/2006/dsa-1151",
        "http://www.linux-ha.org/SecurityIssues",
        "http://www.linux-ha.org/_cache/SecurityIssues__sec03.txt",
        "http://www.mandriva.com/security/advisories?name=MDKSA-2006:142",
        "http://www.securityfocus.com/bid/19516",
        "http://www.ubuntu.com/usn/usn-335-1",
        "http://www.vupen.com/english/advisories/2006/3288",
        "https://exchange.xforce.ibmcloud.com/vulnerabilities/28396",
        "http://secunia.com/advisories/21505",
        "http://secunia.com/advisories/21511",
        "http://secunia.com/advisories/21518",
        "http://secunia.com/advisories/21521",
        "http://secunia.com/advisories/21629",
        "http://security.gentoo.org/glsa/glsa-200608-23.xml",
        "http://www.debian.org/security/2006/dsa-1151",
        "http://www.linux-ha.org/SecurityIssues",
        "http://www.linux-ha.org/_cache/SecurityIssues__sec03.txt",
        "http://www.mandriva.com/security/advisories?name=MDKSA-2006:142",
        "http://www.securityfocus.com/bid/19516"
    ]
}