Cisco Adaptive Security Appliance and Firepower Threat Defense Software SSL/TLS Certificate Denial of Service Vulnerability_CVE-2025-20134

{
    "lastseen": "",
    "description": "A vulnerability in the certificate processing of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.\r\n\r\nThis vulnerability is due to improper parsing of SSL/TLS certificates. An attacker could exploit this vulnerability by sending a crafted SSL/TLS certificate to an affected system through a listening SSL/TLS socket. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.",
    "published": "2025-08-14T16:28:07.782Z",
    "modified": "2025-08-14T19:21:52.387Z",
    "type": "cve",
    "title": "Cisco Adaptive Security Appliance and Firepower Threat Defense Software SSL/TLS Certificate Denial of Service Vulnerability",
    "source": "cisco",
    "references": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-ssltls-dos-eHw76vZe",
    "id": "CVE-2025-20134",
    "bulletinFamily": "",
    "cwe": null,
    "cvelist": null,
    "sourceData": "Cisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.39\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.40\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.4.6\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.4.7\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.41\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.47\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.4.12\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.48\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.4.13\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.50\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.4.14\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.52\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.4.15\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.54\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.4.17\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.55\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.4.22\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.4.23\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.56\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.58\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.62\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.65\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.12.4.67\nCisco Cisco Adaptive Security Appliance (ASA) Software 9.14.4.24\nCisco Cisco Firepower Threat Defense Software 6.6.5.2\nCisco Cisco Firepower Threat Defense Software 6.4.0.15\nCisco Cisco Firepower Threat Defense Software 6.6.7\nCisco Cisco Firepower Threat Defense Software 6.4.0.16\nCisco Cisco Firepower Threat Defense Software 6.6.7.1\nCisco Cisco Firepower Threat Defense Software 6.4.0.17\nCisco Cisco Firepower Threat Defense Software 6.6.7.2\nCisco Cisco Firepower Threat Defense Software 6.4.0.18",
    "sourceHref": "",
    "cvss": {
        "score": 8.6,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Cisco Adaptive Security Appliance (ASA) Software",
    "version": "9.12.4.39",
    "vendor": "Cisco",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}