{
    "id": "CVE-2017-7758",
    "published": "2018-06-11 21:29:08",
    "last_modified": "2026-06-17 01:25:08",
    "cvss_score": "9.1",
    "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:N/A:H",
    "cwe": "CWE-125",
    "description": "An out-of-bounds read vulnerability with the Opus encoder when the number of channels in an audio stream changes while the encoder is in use. This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.",
    "epss_score": "0.03106",
    "epss_percentile": "0.87411",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-10 18:17:16",
    "priority": {
        "rank": 3,
        "label": "In your normal cycle",
        "why": "Critical by CVSS (9.1), but no sign of active exploitation."
    },
    "products": [
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "mozilla",
            "product": "firefox"
        },
        {
            "vendor": "mozilla",
            "product": "thunderbird"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_desktop"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_aus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_server_eus"
        },
        {
            "vendor": "redhat",
            "product": "enterprise_linux_workstation"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://www.securityfocus.com/bid/99057",
        "http://www.securitytracker.com/id/1038689",
        "https://access.redhat.com/errata/RHSA-2017:1440",
        "https://access.redhat.com/errata/RHSA-2017:1561",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1368490",
        "https://www.debian.org/security/2017/dsa-3881",
        "https://www.debian.org/security/2017/dsa-3918",
        "https://www.mozilla.org/security/advisories/mfsa2017-15/",
        "https://www.mozilla.org/security/advisories/mfsa2017-16/",
        "https://www.mozilla.org/security/advisories/mfsa2017-17/",
        "http://www.securityfocus.com/bid/99057",
        "http://www.securitytracker.com/id/1038689",
        "https://access.redhat.com/errata/RHSA-2017:1440",
        "https://access.redhat.com/errata/RHSA-2017:1561",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1368490",
        "https://www.debian.org/security/2017/dsa-3881",
        "https://www.debian.org/security/2017/dsa-3918",
        "https://www.mozilla.org/security/advisories/mfsa2017-15/",
        "https://www.mozilla.org/security/advisories/mfsa2017-16/",
        "https://www.mozilla.org/security/advisories/mfsa2017-17/"
    ]
}