{
    "id": "CVE-2019-3978",
    "published": "2019-10-29 19:15:20",
    "last_modified": "2026-06-17 02:35:59",
    "cvss_score": "7.5",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
    "cwe": "CWE-306",
    "description": "RouterOS versions 6.45.6 Stable, 6.44.5 Long-term, and below allow remote unauthenticated attackers to trigger DNS queries via port 8291. The queries are sent from the router to a server of the attacker's choice. The DNS responses are cached by the router, potentially resulting in cache poisoning",
    "epss_score": "0.10274",
    "epss_percentile": "0.95563",
    "kev": 0,
    "kev_due": null,
    "has_exploit": 1,
    "updated_at": "2026-10-03 18:17:24",
    "priority": {
        "rank": 2,
        "label": "Patch early",
        "why": "A public exploit exists."
    },
    "products": [
        {
            "vendor": "mikrotik",
            "product": "routeros"
        }
    ],
    "kev_detail": null,
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "47566",
            "title": "MikroTik RouterOS 6.45.6 - DNS Cache Poisoning",
            "date": "2019-10-31",
            "url": "https://www.exploit-db.com/exploits/47566"
        }
    ],
    "refs_list": [
        "http://packetstormsecurity.com/files/155036/MikroTik-RouterOS-6.45.6-DNS-Cache-Poisoning.html",
        "https://www.tenable.com/security/research/tra-2019-46",
        "http://packetstormsecurity.com/files/155036/MikroTik-RouterOS-6.45.6-DNS-Cache-Poisoning.html",
        "https://www.tenable.com/security/research/tra-2019-46"
    ]
}