{
    "id": "CVE-2008-1721",
    "published": "2008-04-10 19:05:00",
    "last_modified": "2026-06-16 22:52:21",
    "cvss_score": "7.5",
    "cvss_severity": "HIGH",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
    "cwe": "CWE-681",
    "description": "Integer signedness error in the zlib extension module in Python 2.5.2 and earlier allows remote attackers to execute arbitrary code via a negative signed integer, which triggers insufficient memory allocation and a buffer overflow.",
    "epss_score": "0.22621",
    "epss_percentile": "0.97651",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-29 18:17:07",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "python",
            "product": "python"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "31634",
            "title": "Python zlib Module - Remote Buffer Overflow",
            "date": "2008-04-09",
            "url": "https://www.exploit-db.com/exploits/31634"
        }
    ],
    "refs_list": [
        "http://bugs.python.org/issue2586",
        "http://lists.apple.com/archives/security-announce/2009/Feb/msg00000.html",
        "http://secunia.com/advisories/29889",
        "http://secunia.com/advisories/29955",
        "http://secunia.com/advisories/30872",
        "http://secunia.com/advisories/31255",
        "http://secunia.com/advisories/31358",
        "http://secunia.com/advisories/31365",
        "http://secunia.com/advisories/33937",
        "http://secunia.com/advisories/37471",
        "http://secunia.com/advisories/38675",
        "http://security.gentoo.org/glsa/glsa-200807-01.xml",
        "http://securityreason.com/securityalert/3802",
        "http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.525289",
        "http://support.apple.com/kb/HT3438",
        "http://support.avaya.com/css/P8/documents/100074697",
        "http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0149",
        "http://www.debian.org/security/2008/dsa-1551",
        "http://www.debian.org/security/2008/dsa-1620",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2008:085",
        "http://www.securityfocus.com/archive/1/490690/100/0/threaded",
        "http://www.securityfocus.com/archive/1/507985/100/0/threaded",
        "http://www.securityfocus.com/bid/28715",
        "http://www.securitytracker.com/id?1019823",
        "http://www.ubuntu.com/usn/usn-632-1"
    ]
}