{
    "id": "CVE-2015-8803",
    "published": "2016-02-23 19:59:01",
    "last_modified": "2026-06-17 00:35:16",
    "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-254",
    "description": "The ecc_256_modp function in ecc-256.c in Nettle before 3.2 does not properly handle carry propagation and produces incorrect output in its implementation of the P-256 NIST elliptic curve, which allows attackers to have unspecified impact via unknown vectors, a different vulnerability than CVE-2015-8805.",
    "epss_score": "0.04212",
    "epss_percentile": "0.90722",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-08 18:17:15",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.8), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "canonical",
            "product": "ubuntu_linux"
        },
        {
            "vendor": "nettle_project",
            "product": "nettle"
        },
        {
            "vendor": "opensuse",
            "product": "leap"
        },
        {
            "vendor": "opensuse",
            "product": "opensuse"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176807.html",
        "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177229.html",
        "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177473.html",
        "http://lists.opensuse.org/opensuse-updates/2016-02/msg00091.html",
        "http://lists.opensuse.org/opensuse-updates/2016-02/msg00093.html",
        "http://lists.opensuse.org/opensuse-updates/2016-02/msg00100.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2582.html",
        "http://www.openwall.com/lists/oss-security/2016/02/02/2",
        "http://www.openwall.com/lists/oss-security/2016/02/03/1",
        "http://www.ubuntu.com/usn/USN-2897-1",
        "https://blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html",
        "https://git.lysator.liu.se/nettle/nettle/commit/c71d2c9d20eeebb985e3872e4550137209e3ce4d",
        "https://lists.gnu.org/archive/html/info-gnu/2016-01/msg00006.html",
        "https://lists.lysator.liu.se/pipermail/nettle-bugs/2015/003028.html",
        "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176807.html",
        "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177229.html",
        "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177473.html",
        "http://lists.opensuse.org/opensuse-updates/2016-02/msg00091.html",
        "http://lists.opensuse.org/opensuse-updates/2016-02/msg00093.html",
        "http://lists.opensuse.org/opensuse-updates/2016-02/msg00100.html",
        "http://rhn.redhat.com/errata/RHSA-2016-2582.html",
        "http://www.openwall.com/lists/oss-security/2016/02/02/2",
        "http://www.openwall.com/lists/oss-security/2016/02/03/1",
        "http://www.ubuntu.com/usn/USN-2897-1",
        "https://blog.fuzzing-project.org/38-Miscomputations-of-elliptic-curve-scalar-multiplications-in-Nettle.html"
    ]
}