{
    "id": "CVE-2020-6831",
    "published": "2020-05-26 18:15:11",
    "last_modified": "2026-06-17 03:23:53",
    "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-787",
    "description": "A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. This could have led to memory corruption and a potentially exploitable crash. This vulnerability affects Firefox ESR < 68.8, Firefox < 76, and Thunderbird < 68.8.0.",
    "epss_score": "0.05803",
    "epss_percentile": "0.92921",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 0,
    "updated_at": "2026-10-06 18:17:24",
    "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": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "mozilla",
            "product": "firefox"
        },
        {
            "vendor": "mozilla",
            "product": "firefox_esr"
        },
        {
            "vendor": "mozilla",
            "product": "thunderbird"
        },
        {
            "vendor": "opensuse",
            "product": "leap"
        }
    ],
    "kev_detail": null,
    "exploits": [],
    "refs_list": [
        "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00000.html",
        "http://packetstormsecurity.com/files/158480/usrsctp-Stack-Buffer-Overflow.html",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1632241",
        "https://security.gentoo.org/glsa/202005-03",
        "https://security.gentoo.org/glsa/202005-04",
        "https://usn.ubuntu.com/4373-1/",
        "https://www.debian.org/security/2020/dsa-4714",
        "https://www.mozilla.org/security/advisories/mfsa2020-16/",
        "https://www.mozilla.org/security/advisories/mfsa2020-17/",
        "https://www.mozilla.org/security/advisories/mfsa2020-18/",
        "http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00000.html",
        "http://packetstormsecurity.com/files/158480/usrsctp-Stack-Buffer-Overflow.html",
        "https://bugzilla.mozilla.org/show_bug.cgi?id=1632241",
        "https://security.gentoo.org/glsa/202005-03",
        "https://security.gentoo.org/glsa/202005-04",
        "https://usn.ubuntu.com/4373-1/",
        "https://www.debian.org/security/2020/dsa-4714",
        "https://www.mozilla.org/security/advisories/mfsa2020-16/",
        "https://www.mozilla.org/security/advisories/mfsa2020-17/",
        "https://www.mozilla.org/security/advisories/mfsa2020-18/"
    ]
}