{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-76418",
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "state": "PUBLISHED",
        "assignerShortName": "cisco",
        "dateReserved": "2026-08-19T12:02:03.633Z",
        "datePublished": "2026-10-28T20:05:31.926Z",
        "dateUpdated": "2026-10-29T03:57:11.195Z"
    },
    "containers": {
        "cna": {
            "title": "Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Tunnel 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:H",
                        "baseScore": 8.6,
                        "baseSeverity": "HIGH",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH"
                    }
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A vulnerability in the Remote Access SSL VPN service 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. This vulnerability is due to logic errors when secondary authentication is configured on a tunnel group. An attacker could exploit this vulnerability by sending a crafted request when connecting to the SSL remote access VPN. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition."
                }
            ],
            "references": [
                {
                    "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-tunnel-dos-s6mgkb75",
                    "name": "cisco-sa-asaftd-tunnel-dos-s6mgkb75"
                }
            ],
            "exploits": [
                {
                    "lang": "en",
                    "value": "In October 2026, the Cisco PSIRT became aware of active exploitation of this vulnerability. Cisco strongly recommends that customers upgrade to a fixed software release to remediate this vulnerability."
                }
            ],
            "source": {
                "advisory": "cisco-sa-asaftd-tunnel-dos-s6mgkb75",
                "discovery": "EXTERNAL",
                "defects": [
                    "CSCwx26625"
                ]
            },
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Unchecked Return Value to NULL Pointer Dereference",
                            "type": "cwe",
                            "cweId": "CWE-690"
                        }
                    ]
                }
            ],
            "affected": [
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                    "product": "Cisco Secure Firewall Adaptive Security Appliance (ASA) Software",
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                            "content": {
                                "timestamp": "2026-10-28T00:00:00+00:00",
                                "options": [
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                                        "Exploitation": "none"
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}