{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:cisco:snort:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "3.0.0-233"
              },
              {
                "fixed": "3.9.2.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "7ae50f4be245efd469dee2ce2855b6235b07aa42"
            },
            {
              "fixed": "e2f00a955fca35df603548eb3dcdc0527f911f52"
            }
          ],
          "repo": "https://github.com/snort3/snort3",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:a:cisco:cyber_vision:3.0.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.0.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.0.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.0.3:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.0.4:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.0.5:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.0.6:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.1.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.1.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.1.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.2.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.2.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.2.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.2.3:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:3.2.4:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.0.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.0.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.0.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.0.3:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.1.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.1.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.1.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.1.3:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.1.4:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.1.5:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.1.6:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.1.7:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.2.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.2.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.2.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.2.3:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.2.4:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.2.6:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.3.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.3.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.3.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.3.3:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.4.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.4.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.4.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:4.4.3:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.0.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.0.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.0.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.1.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.1.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.1.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.1.3:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.2.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.2.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.3.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.3.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:cyber_vision:5.3.2:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "3.0.0"
          },
          {
            "last_affected": "3.0.0"
          },
          {
            "introduced": "3.0.1"
          },
          {
            "last_affected": "3.0.1"
          },
          {
            "introduced": "3.0.2"
          },
          {
            "last_affected": "3.0.2"
          },
          {
            "introduced": "3.0.3"
          },
          {
            "last_affected": "3.0.3"
          },
          {
            "introduced": "3.0.4"
          },
          {
            "last_affected": "3.0.4"
          },
          {
            "introduced": "3.0.5"
          },
          {
            "last_affected": "3.0.5"
          },
          {
            "introduced": "3.0.6"
          },
          {
            "last_affected": "3.0.6"
          },
          {
            "introduced": "3.1.0"
          },
          {
            "last_affected": "3.1.0"
          },
          {
            "introduced": "3.1.1"
          },
          {
            "last_affected": "3.1.1"
          },
          {
            "introduced": "3.1.2"
          },
          {
            "last_affected": "3.1.2"
          },
          {
            "introduced": "3.2.0"
          },
          {
            "last_affected": "3.2.0"
          },
          {
            "introduced": "3.2.1"
          },
          {
            "last_affected": "3.2.1"
          },
          {
            "introduced": "3.2.2"
          },
          {
            "last_affected": "3.2.2"
          },
          {
            "introduced": "3.2.3"
          },
          {
            "last_affected": "3.2.3"
          },
          {
            "introduced": "3.2.4"
          },
          {
            "last_affected": "3.2.4"
          },
          {
            "introduced": "4.0.0"
          },
          {
            "last_affected": "4.0.0"
          },
          {
            "introduced": "4.0.1"
          },
          {
            "last_affected": "4.0.1"
          },
          {
            "introduced": "4.0.2"
          },
          {
            "last_affected": "4.0.2"
          },
          {
            "introduced": "4.0.3"
          },
          {
            "last_affected": "4.0.3"
          },
          {
            "introduced": "4.1.0"
          },
          {
            "last_affected": "4.1.0"
          },
          {
            "introduced": "4.1.1"
          },
          {
            "last_affected": "4.1.1"
          },
          {
            "introduced": "4.1.2"
          },
          {
            "last_affected": "4.1.2"
          },
          {
            "introduced": "4.1.3"
          },
          {
            "last_affected": "4.1.3"
          },
          {
            "introduced": "4.1.4"
          },
          {
            "last_affected": "4.1.4"
          },
          {
            "introduced": "4.1.5"
          },
          {
            "last_affected": "4.1.5"
          },
          {
            "introduced": "4.1.6"
          },
          {
            "last_affected": "4.1.6"
          },
          {
            "introduced": "4.1.7"
          },
          {
            "last_affected": "4.1.7"
          },
          {
            "introduced": "4.2.0"
          },
          {
            "last_affected": "4.2.0"
          },
          {
            "introduced": "4.2.1"
          },
          {
            "last_affected": "4.2.1"
          },
          {
            "introduced": "4.2.2"
          },
          {
            "last_affected": "4.2.2"
          },
          {
            "introduced": "4.2.3"
          },
          {
            "last_affected": "4.2.3"
          },
          {
            "introduced": "4.2.4"
          },
          {
            "last_affected": "4.2.4"
          },
          {
            "introduced": "4.2.6"
          },
          {
            "last_affected": "4.2.6"
          },
          {
            "introduced": "4.3.0"
          },
          {
            "last_affected": "4.3.0"
          },
          {
            "introduced": "4.3.1"
          },
          {
            "last_affected": "4.3.1"
          },
          {
            "introduced": "4.3.2"
          },
          {
            "last_affected": "4.3.2"
          },
          {
            "introduced": "4.3.3"
          },
          {
            "last_affected": "4.3.3"
          },
          {
            "introduced": "4.4.0"
          },
          {
            "last_affected": "4.4.0"
          },
          {
            "introduced": "4.4.1"
          },
          {
            "last_affected": "4.4.1"
          },
          {
            "introduced": "4.4.2"
          },
          {
            "last_affected": "4.4.2"
          },
          {
            "introduced": "4.4.3"
          },
          {
            "last_affected": "4.4.3"
          },
          {
            "introduced": "5.0.0"
          },
          {
            "last_affected": "5.0.0"
          },
          {
            "introduced": "5.0.1"
          },
          {
            "last_affected": "5.0.1"
          },
          {
            "introduced": "5.0.2"
          },
          {
            "last_affected": "5.0.2"
          },
          {
            "introduced": "5.1.0"
          },
          {
            "last_affected": "5.1.0"
          },
          {
            "introduced": "5.1.1"
          },
          {
            "last_affected": "5.1.1"
          },
          {
            "introduced": "5.1.2"
          },
          {
            "last_affected": "5.1.2"
          },
          {
            "introduced": "5.1.3"
          },
          {
            "last_affected": "5.1.3"
          },
          {
            "introduced": "5.2.0"
          },
          {
            "last_affected": "5.2.0"
          },
          {
            "introduced": "5.2.1"
          },
          {
            "last_affected": "5.2.1"
          },
          {
            "introduced": "5.3.0"
          },
          {
            "last_affected": "5.3.0"
          },
          {
            "introduced": "5.3.1"
          },
          {
            "last_affected": "5.3.1"
          },
          {
            "introduced": "5.3.2"
          },
          {
            "last_affected": "5.3.2"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "cisco:cyber_vision"
      },
      {
        "cpes": [
          "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.2.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.6.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.10.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:cisco:secure_firewall_threat_defense:7.7.10:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "7.6.0"
          },
          {
            "last_affected": "7.6.0"
          },
          {
            "introduced": "7.6.1"
          },
          {
            "last_affected": "7.6.1"
          },
          {
            "introduced": "7.6.2"
          },
          {
            "last_affected": "7.6.2"
          },
          {
            "introduced": "7.6.2.1"
          },
          {
            "last_affected": "7.6.2.1"
          },
          {
            "introduced": "7.7.0"
          },
          {
            "last_affected": "7.7.0"
          },
          {
            "introduced": "7.7.10"
          },
          {
            "last_affected": "7.7.10"
          },
          {
            "introduced": "7.7.10.1"
          },
          {
            "last_affected": "7.7.10.1"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "cisco:secure_firewall_threat_defense"
      },
      {
        "cpes": [
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.1a:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.2:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.3a:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4a:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.4b:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5a:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5b:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5c:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.5d:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.12.6:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.13.1a:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.14.1a:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.1a:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.2a:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.2c:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.3:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.3a:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.4:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.15.4c:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.16.1a:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.17.1:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.18.1:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.18.1a:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.18.2:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.4:*:*:*:*:*:*:*",
          "cpe:2.3:o:cisco:unified_threat_defense_snort_intrusion_prevention_system_engine:17.9.5e:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "17.9.4"
          },
          {
            "last_affected": "17.9.4"
          },
          {
            "introduced": "17.9.5e"
          },
          {
            "last_affected": "17.9.5e"
          },
          {
            "introduced": "17.12.1a"
          },
          {
            "last_affected": "17.12.1a"
          },
          {
            "introduced": "17.12.2"
          },
          {
            "last_affected": "17.12.2"
          },
          {
            "introduced": "17.12.3"
          },
          {
            "last_affected": "17.12.3"
          },
          {
            "introduced": "17.12.3a"
          },
          {
            "last_affected": "17.12.3a"
          },
          {
            "introduced": "17.12.4"
          },
          {
            "last_affected": "17.12.4"
          },
          {
            "introduced": "17.12.4a"
          },
          {
            "last_affected": "17.12.4a"
          },
          {
            "introduced": "17.12.4b"
          },
          {
            "last_affected": "17.12.4b"
          },
          {
            "introduced": "17.12.5"
          },
          {
            "last_affected": "17.12.5"
          },
          {
            "introduced": "17.12.5a"
          },
          {
            "last_affected": "17.12.5a"
          },
          {
            "introduced": "17.12.5b"
          },
          {
            "last_affected": "17.12.5b"
          },
          {
            "introduced": "17.12.5c"
          },
          {
            "last_affected": "17.12.5c"
          },
          {
            "introduced": "17.12.5d"
          },
          {
            "last_affected": "17.12.5d"
          },
          {
            "introduced": "17.12.6"
          },
          {
            "last_affected": "17.12.6"
          },
          {
            "introduced": "17.13.1a"
          },
          {
            "last_affected": "17.13.1a"
          },
          {
            "introduced": "17.14.1a"
          },
          {
            "last_affected": "17.14.1a"
          },
          {
            "introduced": "17.15.1a"
          },
          {
            "last_affected": "17.15.1a"
          },
          {
            "introduced": "17.15.2a"
          },
          {
            "last_affected": "17.15.2a"
          },
          {
            "introduced": "17.15.2c"
          },
          {
            "last_affected": "17.15.2c"
          },
          {
            "introduced": "17.15.3"
          },
          {
            "last_affected": "17.15.3"
          },
          {
            "introduced": "17.15.3a"
          },
          {
            "last_affected": "17.15.3a"
          },
          {
            "introduced": "17.15.4"
          },
          {
            "last_affected": "17.15.4"
          },
          {
            "introduced": "17.15.4c"
          },
          {
            "last_affected": "17.15.4c"
          },
          {
            "introduced": "17.16.1a"
          },
          {
            "last_affected": "17.16.1a"
          },
          {
            "introduced": "17.17.1"
          },
          {
            "last_affected": "17.17.1"
          },
          {
            "introduced": "17.18.1"
          },
          {
            "last_affected": "17.18.1"
          },
          {
            "introduced": "17.18.1a"
          },
          {
            "last_affected": "17.18.1a"
          },
          {
            "introduced": "17.18.2"
          },
          {
            "last_affected": "17.18.2"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "cisco:unified_threat_defense_snort_intrusion_prevention_system_engine"
      }
    ]
  },
  "details": "Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspection.\r\n\r This vulnerability is due to incomplete parsing of the SSL handshake ingress packets. An attacker could exploit this vulnerability by sending crafted SSL handshake packets. A successful exploit could allow the attacker to cause a denial of service (DoS) condition when the Snort 3 Detection Engine restarts unexpectedly.",
  "id": "CVE-2026-20005",
  "modified": "2026-09-03T03:30:41.974909550Z",
  "published": "2026-03-04T17:16:18.110Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort3-multi-dos-XFWkWSwz"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}