{
    "id": "CVE-2018-1000001",
    "published": "2018-01-31 14:29:00",
    "last_modified": "2026-06-17 01:32:10",
    "cvss_score": "7.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-787",
    "description": "In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.",
    "epss_score": "0.13368",
    "epss_percentile": "0.96308",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-02 18:17:20",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "gnu",
            "product": "glibc"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_desktop"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_aus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_tus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_workstation"
        },
        {
            "vendor": "redhat",
            "product": "virtualization_host"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "44889",
            "title": "glibc - 'realpath()' Privilege Escalation (Metasploit)",
            "date": "2018-06-13",
            "url": "https://www.exploit-db.com/exploits/44889"
        },
        {
            "source": "exploit-db",
            "ref_id": "43775",
            "title": "glibc < 2.26 - 'getcwd()' Local Privilege Escalation",
            "date": "2018-01-16",
            "url": "https://www.exploit-db.com/exploits/43775"
        }
    ],
    "refs_list": [
        "http://seclists.org/oss-sec/2018/q1/38",
        "http://www.securityfocus.com/bid/102525",
        "http://www.securitytracker.com/id/1040162",
        "https://access.redhat.com/errata/RHSA-2018:0805",
        "https://security.netapp.com/advisory/ntap-20190404-0003/",
        "https://usn.ubuntu.com/3534-1/",
        "https://usn.ubuntu.com/3536-1/",
        "https://www.exploit-db.com/exploits/43775/",
        "https://www.exploit-db.com/exploits/44889/",
        "https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/",
        "http://seclists.org/oss-sec/2018/q1/38",
        "http://www.securityfocus.com/bid/102525",
        "http://www.securitytracker.com/id/1040162",
        "https://access.redhat.com/errata/RHSA-2018:0805",
        "https://security.netapp.com/advisory/ntap-20190404-0003/",
        "https://usn.ubuntu.com/3534-1/",
        "https://usn.ubuntu.com/3536-1/",
        "https://www.exploit-db.com/exploits/43775/",
        "https://www.exploit-db.com/exploits/44889/",
        "https://www.halfdog.net/Security/2017/LibcRealpathBufferUnderflow/"
    ]
}