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        "cveId": "CVE-2026-11604",
        "assignerOrgId": "36a55730-e66d-4d39-8ca6-3c3b3017965e",
        "state": "PUBLISHED",
        "assignerShortName": "OpenVPN",
        "dateReserved": "2026-06-08T15:19:28.369Z",
        "datePublished": "2026-06-10T21:04:37.141Z",
        "dateUpdated": "2026-06-11T13:27:17.336Z"
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                "orgId": "36a55730-e66d-4d39-8ca6-3c3b3017965e",
                "shortName": "OpenVPN",
                "dateUpdated": "2026-06-10T21:04:37.141Z"
            },
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-131",
                            "description": "CWE-131 Incorrect calculation of buffer size",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-122",
                            "description": "CWE-122 Heap-based buffer overflow",
                            "type": "CWE"
                        }
                    ]
                },
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-787",
                            "description": "CWE-787 Out-of-bounds write",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "OpenVPN",
                    "product": "ovpn-dco-win",
                    "platforms": [
                        "Windows"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "2.0.0",
                            "lessThanOrEqual": "2.5.8",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
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            ],
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                {
                    "lang": "en",
                    "value": "An incorrect buffer size calculation in the epoch key generator in OpenVPN ovpn-dco-win version 2.0.0 through 2.8.3 allows a remote authenticated peer to trigger a heap-based buffer overflow and kernel memory corruption via a crafted data packet, resulting in a system crash (denial of service)."
                }
            ],
            "references": [
                {
                    "url": "https://github.com/OpenVPN/ovpn-dco-win/releases",
                    "tags": [
                        "product"
                    ]
                },
                {
                    "url": "https://community.openvpn.net/Security%20Announcements/CVE-2026-11604",
                    "tags": [
                        "vendor-advisory"
                    ]
                }
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                    "format": "CVSS",
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                            "lang": "en",
                            "value": "GENERAL"
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                        "attackVector": "LOCAL",
                        "attackComplexity": "HIGH",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "LOW",
                        "userInteraction": "PASSIVE",
                        "vulnConfidentialityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "subAvailabilityImpact": "HIGH",
                        "exploitMaturity": "NOT_DEFINED",
                        "Safety": "NOT_DEFINED",
                        "Automatable": "NOT_DEFINED",
                        "Recovery": "NOT_DEFINED",
                        "valueDensity": "NOT_DEFINED",
                        "vulnerabilityResponseEffort": "NOT_DEFINED",
                        "providerUrgency": "NOT_DEFINED",
                        "version": "4.0",
                        "baseSeverity": "MEDIUM",
                        "baseScore": 5.6,
                        "vectorString": "CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H"
                    }
                }
            ],
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                "engine": "cvelib 1.8.0"
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        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-06-11T13:26:56.757395Z",
                                "id": "CVE-2026-11604",
                                "options": [
                                    {
                                        "Exploitation": "none"
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                                "role": "CISA Coordinator",
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                "title": "CISA ADP Vulnrichment",
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