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CVE-2026-20218Published

Cisco Secure Firewall Threat Defense Snort 3 Visual Basic for Applications Buffer Overflow Denial of Service Vulnerability

Exact source revision recorded 23 Oct 2026 15:48:27 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

cve-program · CVE-2026-20218

Published

Cisco Open Source Snort3

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Cisco",
                    "product": "Cisco Open Source Snort3",
                    "versions": [
                        {
                            "version": "3.12.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.3.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.4.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.5.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.6.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.7.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.8.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.9.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.10.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.12.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.13.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.14.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.15.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.16.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.17.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.18.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.19.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.20.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.21.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.22.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.23.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.24.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.25.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.27.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.28.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.29.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.30.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.31.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.32.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.36.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.38.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.39.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.40.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.41.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.42.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.43.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.45.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.47.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.48.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.50.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.51.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.52.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.53.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.55.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.56.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.57.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.58.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.59.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.60.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.61.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.62.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.63.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.64.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.65.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.66.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.67.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.69.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.70.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.71.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.72.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.73.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.74.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.75.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.76.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.77.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.78.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.81.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.82.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.83.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.1.84.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.2.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.2.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.3.0.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.3.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.3.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.3.3.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.3.4.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.3.5.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.3.7.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.5.0.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.5.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.8.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.0.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.9.3.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.0.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.9.6.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.0.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.4.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.9.0.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.5.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.12.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.9.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.6.3.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.9.5.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.9.7.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.3.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.9.1.0",
                            "status": "affected"
                        },
                        {
                            "version": "3.11.1.0",
                            "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": "7.2.0",
                            "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": "7.7.0",
                            "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": "7.6.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.7.10",
                            "status": "affected"
                        },
                        {
                            "version": "7.7.11",
                            "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": "7.2.11",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.7",
                            "status": "affected"
                        }
                    ],
                    "defaultStatus": "unknown"
                }

Cisco UTD SNORT IPS Engine Software

Vendor product

Original vendor version evidence · not evaluated as a NuGet range
{
                    "vendor": "Cisco",
                    "product": "Cisco UTD SNORT IPS Engine Software",
                    "versions": [
                        {
                            "version": "17.12.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.2",
                            "status": "affected"
                        },
                        {
                            "version": "17.13.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.3",
                            "status": "affected"
                        },
                        {
                            "version": "17.14.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.4",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.3a",
                            "status": "affected"
                        },
                        {
                            "version": "17.15.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.16.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.4a",
                            "status": "affected"
                        },
                        {
                            "version": "17.15.2c",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.4b",
                            "status": "affected"
                        },
                        {
                            "version": "17.15.2a",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.5",
                            "status": "affected"
                        },
                        {
                            "version": "17.17.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.5a",
                            "status": "affected"
                        },
                        {
                            "version": "17.15.3a",
                            "status": "affected"
                        },
                        {
                            "version": "17.15.3",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.5b",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.5c",
                            "status": "affected"
                        },
                        {
                            "version": "17.15.4",
                            "status": "affected"
                        },
                        {
                            "version": "17.18.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.18.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.6",
                            "status": "affected"
                        },
                        {
                            "version": "17.15.4c",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.5d",
                            "status": "affected"
                        },
                        {
                            "version": "17.18.2",
                            "status": "affected"
                        },
                        {
                            "version": "26.1.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.15.5",
                            "status": "affected"
                        },
                        {
                            "version": "17.15.5a",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.7",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.7a",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.7b",
                            "status": "affected"
                        },
                        {
                            "version": "17.18.3a",
                            "status": "affected"
                        },
                        {
                            "version": "17.12.8",
                            "status": "affected"
                        },
                        {
                            "version": "17.15.6",
                            "status": "affected"
                        },
                        {
                            "version": "17.18.4",
                            "status": "affected"
                        },
                        {
                            "version": "26.1.2",
                            "status": "affected"
                        }
                    ],
                    "defaultStatus": "unknown"
                }

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

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Sources read 8 Nov 07:24 UTC · 275 of 275 readable · 273 fully read · documentation 469/469 current

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