{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-20006",
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "state": "PUBLISHED",
        "assignerShortName": "cisco",
        "dateReserved": "2025-10-08T11:59:15.349Z",
        "datePublished": "2026-03-04T17:37:54.866Z",
        "dateUpdated": "2026-03-04T20:51:58.937Z"
    },
    "containers": {
        "cna": {
            "title": "Cisco Firepower Threat Defense Software and Cisco FirePOWER Services TLS with Snort 3 Denial of Service Vulnerability",
            "metrics": [
                {
                    "format": "cvssV3_1",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L",
                        "baseScore": 5.8,
                        "baseSeverity": "MEDIUM",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "LOW"
                    }
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A vulnerability in the TLS cryptography functionality of the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to unexpectedly restart, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to improper implementation of the TLS protocol. An attacker could exploit this vulnerability by sending a crafted TLS packet to an affected system. A successful exploit could allow the attacker to cause a device that is running Cisco Secure FTD Software to drop network traffic, resulting in a DoS condition. \r\nNote: TLS 1.3 is not affected by this vulnerability."
                }
            ],
            "references": [
                {
                    "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ftd-tcp-dos-rHfqnwRg",
                    "name": "cisco-sa-ftd-tcp-dos-rHfqnwRg"
                }
            ],
            "exploits": [
                {
                    "lang": "en",
                    "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
                }
            ],
            "source": {
                "advisory": "cisco-sa-ftd-tcp-dos-rHfqnwRg",
                "discovery": "INTERNAL",
                "defects": [
                    "CSCwn73801"
                ]
            },
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Error Handling",
                            "type": "cwe",
                            "cweId": "CWE-388"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "Cisco",
                    "product": "Cisco Secure Firewall Threat Defense (FTD) Software",
                    "versions": [
                        {
                            "version": "7.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.0.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.3",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.4",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.5",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.4.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.1.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.5.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.6",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.1.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.7",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.5.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.1.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.8",
                            "status": "affected"
                        },
                        {
                            "version": "7.6.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.8.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.9",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.2.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.10",
                            "status": "affected"
                        },
                        {
                            "version": "7.6.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.2.3",
                            "status": "affected"
                        },
                        {
                            "version": "7.6.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.6.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.2.4",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.10.2",
                            "status": "affected"
                        }
                    ],
                    "defaultStatus": "unknown"
                }
            ],
            "providerMetadata": {
                "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
                "shortName": "cisco",
                "dateUpdated": "2026-03-04T17:37:54.866Z"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-03-04T20:51:52.748707Z",
                                "id": "CVE-2026-20006",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-03-04T20:51:58.937Z"
                }
            }
        ]
    }
}