{
    "id": "CVE-2013-4788",
    "published": "2013-10-04 17:55:09",
    "last_modified": "2026-06-16 23:57:53",
    "cvss_score": "5.1",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:N/AC:H/Au:N/C:P/I:P/A:P",
    "cwe": "CWE-20",
    "description": "The PTR_MANGLE implementation in the GNU C Library (aka glibc or libc6) 2.4, 2.17, and earlier, and Embedded GLIBC (EGLIBC) does not initialize the random value for the pointer guard, which makes it easier for context-dependent attackers to control execution flow by leveraging a buffer-overflow vulnerability in an application and using the known zero value pointer guard to calculate a pointer address.",
    "epss_score": "0.11428",
    "epss_percentile": "0.95867",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-28 18:17:11",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "gnu",
            "product": "eglibc"
        },
        {
            "vendor": "gnu",
            "product": "glibc"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "28657",
            "title": "glibc and eglibc 2.5/2.7/2.13 - Local Buffer Overflow",
            "date": "2013-09-30",
            "url": "https://www.exploit-db.com/exploits/28657"
        }
    ],
    "refs_list": [
        "http://hmarco.org/bugs/CVE-2013-4788.html",
        "http://seclists.org/fulldisclosure/2015/Sep/23",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2013:283",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2013:284",
        "http://www.openwall.com/lists/oss-security/2013/07/15/9",
        "http://www.securityfocus.com/bid/61183",
        "https://security.gentoo.org/glsa/201503-04",
        "http://hmarco.org/bugs/CVE-2013-4788.html",
        "http://seclists.org/fulldisclosure/2015/Sep/23",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2013:283",
        "http://www.mandriva.com/security/advisories?name=MDVSA-2013:284",
        "http://www.openwall.com/lists/oss-security/2013/07/15/9",
        "http://www.securityfocus.com/bid/61183",
        "https://security.gentoo.org/glsa/201503-04"
    ]
}