{
    "id": "CVE-2019-11500",
    "published": "2019-08-29 14:15:11",
    "last_modified": "2026-06-17 02:13:01",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.0",
    "cvss_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-787",
    "description": "In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for quoted strings. This occurs because '\\0' characters are mishandled, and can lead to out-of-bounds writes and remote code execution.",
    "epss_score": "0.62579",
    "epss_percentile": "0.99171",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-02 18:17:23",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "EPSS 62.6% — above the 10% action threshold."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "dovecot",
            "product": "dovecot"
        },
        {
            "vendor": "dovecot",
            "product": "pigeonhole"
        },
        {
            "vendor": "fedoraproject",
            "product": "fedora"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00024.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00026.html",
        "http://www.openwall.com/lists/oss-security/2019/08/28/3",
        "https://access.redhat.com/errata/RHSA-2019:2822",
        "https://access.redhat.com/errata/RHSA-2019:2836",
        "https://access.redhat.com/errata/RHSA-2019:2885",
        "https://dovecot.org/pipermail/dovecot-news/2019-August/000417.html",
        "https://lists.debian.org/debian-lts-announce/2019/08/msg00035.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GYTZLLDNIFWT7D7JSB25ERJNMOR4CQ3/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KVHY3MU2OK2EWZJFGNDSAOMD42L7DFPX/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YSJVVVRAE3SITC2ZLGCPMFDN3WVYZBWF/",
        "https://security.gentoo.org/glsa/201908-29",
        "https://www.dovecot.org/security.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00024.html",
        "http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00026.html",
        "http://www.openwall.com/lists/oss-security/2019/08/28/3",
        "https://access.redhat.com/errata/RHSA-2019:2822",
        "https://access.redhat.com/errata/RHSA-2019:2836",
        "https://access.redhat.com/errata/RHSA-2019:2885",
        "https://dovecot.org/pipermail/dovecot-news/2019-August/000417.html",
        "https://lists.debian.org/debian-lts-announce/2019/08/msg00035.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3GYTZLLDNIFWT7D7JSB25ERJNMOR4CQ3/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KVHY3MU2OK2EWZJFGNDSAOMD42L7DFPX/",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YSJVVVRAE3SITC2ZLGCPMFDN3WVYZBWF/",
        "https://security.gentoo.org/glsa/201908-29"
    ]
}