CVE-2026-76418CISA KEV

Cisco Secure Firewall ASA Software and Cisco Secure FTD Software Unchecked Return Value to NULL Pointer Dereference Vulnerability

CISA lists this Cisco Secure Firewall ASA Software and Cisco Secure FTD Software vulnerability as known exploited. Check the cited references and original publisher guidance for affected products and remediation.

CISA KEV CISA-cited reference NVD

CISA catalog record

Cisco Secure Firewall ASA Software and Cisco Secure FTD Software contains an unchecked return value to NULL pointer dereference vulnerability that could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.

Product: Secure Firewall ASA Software and Cisco Secure FTD Software
Added to KEV: 29 Oct 2026
Federal remediation due: 1 Nov 2026
Known ransomware use: Not reported

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29 Oct 2026 · 20:19:26 UTC Link: Vendor advisoryhttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-tunnel-dos-s6mgkb75 → No longer listed in this observation
29 Oct 2026 · 20:19:26 UTC Link: CISA-cited referencehttps://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-tunnel-dos-s6mgkb75

Explore global source statements, affected packages and advisory history for CVE-2026-76418. The catalog has a separate collection scope from Microsoft release records.

cve-program · CVE-2026-76418

Published

Cisco Secure Firewall Adaptive Security Appliance (ASA) Software

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Cisco",
                    "product": "Cisco Secure Firewall Adaptive Security Appliance (ASA) Software",
                    "versions": [
                        {
                            "version": "9.16.1",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.1.28",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.2",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.2.3",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.2.7",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.2.11",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.2.13",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.2.14",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.3.3",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.3",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.3.14",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.1",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.3.15",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.1.3",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.2",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.3.19",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.3.23",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.2.5",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.2.7",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.9",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.2.8",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.14",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.3",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.5",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.18",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.9",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.3.39",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.19",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.12",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.3.46",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.27",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.18",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.3.53",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.3.55",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.38",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.39",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.3.56",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.1",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.42",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.22",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.1.5",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.5",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.24",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.48",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.8",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.2",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.27",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.55",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.22",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.2.10",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.57",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.28",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.24",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.2.21",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.61",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.31",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.29",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.2.22",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.62",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.34",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.3",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.67",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.70",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.40",
                            "status": "affected"
                        },
                        {
                            "version": "9.23.1",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.1.1",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.71",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.3.4",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.47",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.3.7",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.37",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.76",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.3.9",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.38",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.50",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.1.3",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.3.10",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.1.2",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.52",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.3.13",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.1.6",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.53",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.82",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.2",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.3.16",
                            "status": "affected"
                        },
                        {
                            "version": "9.19.1.42",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.57",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.84",
                            "status": "affected"
                        },
                        {
                            "version": "9.23.1.3",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.3.20",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.2.4",
                            "status": "affected"
                        },
                        {
                            "version": "9.23.1.7",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.2.9",
                            "status": "affected"
                        },
                        {
                            "version": "9.23.1.13",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4.7",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.2.13",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.66",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4.10",
                            "status": "affected"
                        },
                        {
                            "version": "9.23.1.19",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.85",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.2.14",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.67",
                            "status": "affected"
                        },
                        {
                            "version": "9.24.1",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.68",
                            "status": "affected"
                        },
                        {
                            "version": "9.23.1.22",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4.14",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.2.20",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.71",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4.19",
                            "status": "affected"
                        },
                        {
                            "version": "9.23.1.26",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.89",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.2.32",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.76",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.3",
                            "status": "affected"
                        },
                        {
                            "version": "9.24.1.5",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4.22",
                            "status": "affected"
                        },
                        {
                            "version": "9.24.1.9",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4.28",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.3.5",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.92",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.135",
                            "status": "affected"
                        },
                        {
                            "version": "9.23.1.195",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4.30",
                            "status": "affected"
                        },
                        {
                            "version": "9.24.1.155",
                            "status": "affected"
                        },
                        {
                            "version": "9.23.1.32",
                            "status": "affected"
                        },
                        {
                            "version": "9.24.1.11",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4.34",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.82",
                            "status": "affected"
                        },
                        {
                            "version": "9.24.10",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.90",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4.46",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4.235",
                            "status": "affected"
                        },
                        {
                            "version": "9.20.4.49",
                            "status": "affected"
                        },
                        {
                            "version": "9.22.3.26",
                            "status": "affected"
                        },
                        {
                            "version": "9.16.4.103",
                            "status": "affected"
                        },
                        {
                            "version": "9.18.4.94",
                            "status": "affected"
                        },
                        {
                            "version": "9.23.1.47",
                            "status": "affected"
                        },
                        {
                            "version": "9.24.1.26",
                            "status": "affected"
                        }
                    ],
                    "defaultStatus": "unknown"
                }

Cisco Secure Firewall Threat Defense (FTD) Software

Vendor product

Original vendor version evidence · not evaluated as a NuGet range

{
                    "vendor": "Cisco",
                    "product": "Cisco Secure Firewall Threat Defense (FTD) Software",
                    "versions": [
                        {
                            "version": "7.0.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.0.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.1.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.3",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.0.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.4",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.5",
                            "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": "7.0.6",
                            "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": "7.0.6.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.5.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.6",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.6.2",
                            "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": "7.0.6.3",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.9",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.7",
                            "status": "affected"
                        },
                        {
                            "version": "7.7.0",
                            "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": "7.0.8",
                            "status": "affected"
                        },
                        {
                            "version": "7.6.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.7.10",
                            "status": "affected"
                        },
                        {
                            "version": "7.7.11",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.8.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.6.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.7.10.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.2.4",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.10.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.3",
                            "status": "affected"
                        },
                        {
                            "version": "7.6.4",
                            "status": "affected"
                        },
                        {
                            "version": "10.0.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.4",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.9",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.11",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.7",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.8",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.12",
                            "status": "affected"
                        },
                        {
                            "version": "7.6.6",
                            "status": "affected"
                        },
                        {
                            "version": "7.7.13",
                            "status": "affected"
                        },
                        {
                            "version": "10.0.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.10",
                            "status": "affected"
                        },
                        {
                            "version": "10.1.0",
                            "status": "affected"
                        }
                    ],
                    "defaultStatus": "unknown"
                }

Original source record · Cite this exact observation · Complete original publisher JSON