{
    "id": "CVE-2016-2851",
    "published": "2016-04-07 23:59:09",
    "last_modified": "2026-06-17 00:44:35",
    "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-119",
    "description": "Integer overflow in proto.c in libotr before 4.1.1 on 64-bit platforms allows remote attackers to cause a denial of service (memory corruption and application crash) or execute arbitrary code via a series of large OTR messages, which triggers a heap-based buffer overflow.",
    "epss_score": "0.25400",
    "epss_percentile": "0.97879",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-09-27 18:17:16",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "cypherpunks",
            "product": "libotr"
        },
        {
            "vendor": "debian",
            "product": "debian_linux"
        },
        {
            "vendor": "opensuse",
            "product": "leap"
        },
        {
            "vendor": "opensuse",
            "product": "opensuse"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "39550",
            "title": "libotr 4.1.0 - Memory Corruption",
            "date": "2016-03-10",
            "url": "https://www.exploit-db.com/exploits/39550"
        }
    ],
    "refs_list": [
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00021.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00030.html",
        "http://seclists.org/fulldisclosure/2016/Mar/21",
        "http://www.debian.org/security/2016/dsa-3512",
        "http://www.securityfocus.com/archive/1/537745/100/0/threaded",
        "http://www.securityfocus.com/bid/84285",
        "http://www.ubuntu.com/usn/USN-2926-1",
        "https://lists.cypherpunks.ca/pipermail/otr-users/2016-March/002581.html",
        "https://security.gentoo.org/glsa/201701-10",
        "https://www.exploit-db.com/exploits/39550/",
        "https://www.x41-dsec.de/lab/advisories/x41-2016-001-libotr/",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00021.html",
        "http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00030.html",
        "http://seclists.org/fulldisclosure/2016/Mar/21",
        "http://www.debian.org/security/2016/dsa-3512",
        "http://www.securityfocus.com/archive/1/537745/100/0/threaded",
        "http://www.securityfocus.com/bid/84285",
        "http://www.ubuntu.com/usn/USN-2926-1",
        "https://lists.cypherpunks.ca/pipermail/otr-users/2016-March/002581.html",
        "https://security.gentoo.org/glsa/201701-10",
        "https://www.exploit-db.com/exploits/39550/",
        "https://www.x41-dsec.de/lab/advisories/x41-2016-001-libotr/"
    ]
}