{
    "id": "CVE-2010-4645",
    "published": "2011-01-11 03:00:04",
    "last_modified": "2026-06-16 23:25:14",
    "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-189",
    "description": "strtod.c, as used in the zend_strtod function in PHP 5.2 before 5.2.17 and 5.3 before 5.3.5, and other products, allows context-dependent attackers to cause a denial of service (infinite loop) via a certain floating-point value in scientific notation, which is not properly handled in x87 FPU registers, as demonstrated using 2.2250738585072011e-308.",
    "epss_score": "0.15103",
    "epss_percentile": "0.96625",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-27 18:17:09",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "php",
            "product": "php"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "35164",
            "title": "PHP 5.3.2 - 'zend_strtod()' Floating-Point Value Denial of Service",
            "date": "2011-01-03",
            "url": "https://www.exploit-db.com/exploits/35164"
        }
    ],
    "refs_list": [
        "http://bugs.php.net/53632",
        "http://hal.archives-ouvertes.fr/docs/00/28/14/29/PDF/floating-point-article.pdf",
        "http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html",
        "http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053333.html",
        "http://lists.fedoraproject.org/pipermail/package-announce/2011-January/053355.html",
        "http://marc.info/?l=bugtraq&m=133226187115472&w=2",
        "http://marc.info/?l=bugtraq&m=133469208622507&w=2",
        "http://secunia.com/advisories/42812",
        "http://secunia.com/advisories/42843",
        "http://secunia.com/advisories/43051",
        "http://secunia.com/advisories/43189",
        "http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.484686",
        "http://support.apple.com/kb/HT5002",
        "http://svn.php.net/viewvc/php/php-src/branches/PHP_5_2/Zend/zend_strtod.c?r1=266327&r2=307095&pathrev=307095",
        "http://www.exploringbinary.com/php-hangs-on-numeric-value-2-2250738585072011e-308/",
        "http://www.openwall.com/lists/oss-security/2011/01/05/2",
        "http://www.openwall.com/lists/oss-security/2011/01/05/8",
        "http://www.openwall.com/lists/oss-security/2011/01/06/5",
        "http://www.openwall.com/lists/oss-security/2023/05/14/3",
        "http://www.redhat.com/support/errata/RHSA-2011-0195.html",
        "http://www.redhat.com/support/errata/RHSA-2011-0196.html",
        "http://www.securityfocus.com/bid/45668",
        "http://www.ubuntu.com/usn/USN-1042-1",
        "http://www.vupen.com/english/advisories/2011/0060",
        "http://www.vupen.com/english/advisories/2011/0066"
    ]
}