ovpn-dco-win — security advisory

{
  "id": "22a2dd73c433c76b89e89192426155cedc9379470510ccf7a9bc8792b2e0d0f5",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-115402",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-115402",
    "summary": "OpenVPN ovpn-dco-win 0.6.5 through 2.8.13 allows unprivileged local users to cause a denial of service (system crash) via a race condition in the TCP connect path.",
    "evidence": "cve:CVE-2026-115402",
    "products": [
      {
        "name": {
          "value": "ovpn-dco-win",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-115402",
      "aliases": [
        "CVE-2026-115402"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV4_0": {
            "Safety": "NOT_DEFINED",
            "version": "4.0",
            "Recovery": "NOT_DEFINED",
            "baseScore": 5.7,
            "Automatable": "NOT_DEFINED",
            "attackVector": "LOCAL",
            "baseSeverity": "MEDIUM",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
            "exploitMaturity": "NOT_DEFINED",
            "providerUrgency": "NOT_DEFINED",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "privilegesRequired": "LOW",
            "subIntegrityImpact": "NONE",
            "vulnIntegrityImpact": "NONE",
            "subAvailabilityImpact": "NONE",
            "vulnAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "OpenVPN",
          "product": "ovpn-dco-win",
          "versions": [
            {
              "status": "affected",
              "version": "0.6.5",
              "versionType": "semver",
              "lessThanOrEqual": "2.8.13"
            }
          ],
          "platforms": [
            "Windows"
          ],
          "defaultStatus": "unaffected"
        }
      ],
      "modified": "2026-10-28T15:00:23.951Z",
      "provider": "cve",
      "references": [
        "https://community.openvpn.net/Security%20Announcements/CVE-2026-115402"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "36a55730-e66d-4d39-8ca6-3c3b3017965e",
          "shortName": "OpenVPN",
          "dateUpdated": "2026-10-28T15:00:23.951Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-115402",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 454327,
  "published_at": "2026-10-28T15:00:23.951+00:00"
}