{
    "id": "CVE-2021-40393",
    "published": "2021-12-22 19:15:11",
    "last_modified": "2026-06-17 04:06:51",
    "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-119",
    "description": "An out-of-bounds write vulnerability exists in the RS-274X aperture macro variables handling functionality of Gerbv 2.7.0 and dev (commit b5f1eacd) and the forked version of Gerbv (commit 71493260). A specially-crafted gerber file can lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.",
    "epss_score": "0.03040",
    "epss_percentile": "0.87153",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-10 18:17:26",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "gerbv_project",
            "product": "gerbv"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "https://lists.debian.org/debian-lts-announce/2023/09/msg00040.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/37OSNNO5N5FJZP6ZBYRJMML5HYMJQIX7/",
        "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1404",
        "https://www.debian.org/security/2022/dsa-5306",
        "https://lists.debian.org/debian-lts-announce/2023/09/msg00040.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/37OSNNO5N5FJZP6ZBYRJMML5HYMJQIX7/",
        "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1404",
        "https://www.debian.org/security/2022/dsa-5306"
    ]
}