{
    "id": "CVE-2020-20277",
    "published": "2020-12-18 19:15:14",
    "last_modified": "2026-06-17 03:02:56",
    "cvss_score": "9.8",
    "cvss_severity": "CRITICAL",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "cwe": "CWE-22",
    "description": "There are multiple unauthenticated directory traversal vulnerabilities in different FTP commands in uftpd FTP server versions 2.7 to 2.10 due to improper implementation of a chroot jail in common.c's compose_abspath function that can be abused to read or write to arbitrary files on the filesystem, leak process memory, or potentially lead to remote code execution.",
    "epss_score": "0.26236",
    "epss_percentile": "0.97935",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-27 18:17:26",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "troglobit",
            "product": "uftpd"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "51000",
            "title": "uftpd 2.10 - Directory Traversal (Authenticated)",
            "date": "2022-08-02",
            "url": "https://www.exploit-db.com/exploits/51000"
        }
    ],
    "refs_list": [
        "http://packetstormsecurity.com/files/167908/uftpd-2.10-Directory-Traversal.html",
        "https://arinerron.com/blog/posts/6",
        "https://github.com/troglobit/uftpd/commit/455b47d3756aed162d2d0ef7f40b549f3b5b30fe",
        "http://packetstormsecurity.com/files/167908/uftpd-2.10-Directory-Traversal.html",
        "https://arinerron.com/blog/posts/6",
        "https://github.com/troglobit/uftpd/commit/455b47d3756aed162d2d0ef7f40b549f3b5b30fe"
    ]
}