{
    "id": "CVE-2003-0955",
    "published": "2003-12-15 05:00:00",
    "last_modified": "2026-06-16 22:03:14",
    "cvss_score": "4.6",
    "cvss_severity": "MEDIUM",
    "cvss_version": "2.0",
    "cvss_vector": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
    "cwe": null,
    "description": "OpenBSD kernel 3.3 and 3.4 allows local users to cause a denial of service (kernel panic) and possibly execute arbitrary code in 3.4 via a program with an invalid header that is not properly handled by (1) ibcs2_exec.c in the iBCS2 emulation (compat_ibcs2) or (2) exec_elf.c, which leads to a stack-based buffer overflow.",
    "epss_score": "0.01136",
    "epss_percentile": "0.65621",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-11 18:17:03",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "openbsd",
            "product": "openbsd"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "125",
            "title": "OpenBSD 2.x < 3.3 - 'exec_ibcs2_coff_prep_zmagic()' kernel stack overflow",
            "date": "2003-11-19",
            "url": "https://www.exploit-db.com/exploits/125"
        },
        {
            "source": "exploit-db",
            "ref_id": "118",
            "title": "OpenBSD - 'ibcs2_exec' Kernel Code Execution",
            "date": "2003-11-07",
            "url": "https://www.exploit-db.com/exploits/118"
        }
    ],
    "refs_list": [
        "ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.4/common/005_exec.patch",
        "http://lists.grok.org.uk/pipermail/full-disclosure/2003-November/013315.html",
        "http://marc.info/?l=openbsd-security-announce&m=106808820119679&w=2",
        "http://marc.info/?l=openbsd-security-announce&m=106917441524978&w=2",
        "http://www.guninski.com/msuxobsd2.html",
        "http://www.openbsd.org/errata33.html",
        "http://www.securityfocus.com/bid/8978",
        "ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.4/common/005_exec.patch",
        "http://lists.grok.org.uk/pipermail/full-disclosure/2003-November/013315.html",
        "http://marc.info/?l=openbsd-security-announce&m=106808820119679&w=2",
        "http://marc.info/?l=openbsd-security-announce&m=106917441524978&w=2",
        "http://www.guninski.com/msuxobsd2.html",
        "http://www.openbsd.org/errata33.html",
        "http://www.securityfocus.com/bid/8978"
    ]
}