{
  "cveId": "CVE-2023-35838",
  "url": "https://patchblox.com/security/cve/CVE-2023-35838",
  "summary": "CVE-2023-35838 is fixed in WireGuard on 1 platform by WireGuard 0.6.1 (version 0.6.1), released April 10, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "WireGuard: The WireGuard client 0.5.3 on Windows insecurely configures the operating system and firewall such that\u2026",
  "description": "The WireGuard client 0.5.3 on Windows insecurely configures the operating system and firewall such that traffic to a local network that uses non-RFC1918 IP addresses is blocked. This allows an adversary to trick the victim into blocking IP traffic to selected IP addresses and services even while the VPN is enabled. NOTE: the tunnelcrack.mathyvanhoef.com website uses this CVE ID to refer more generally to \u0022LocalNet attack resulting in the blocking of traffic\u0022 rather than to only WireGuard.",
  "published": "2023-08-09T23:15:10Z",
  "severity": "",
  "cvss": 5.7,
  "epss": 0.00689,
  "epssPercentile": 0.53006,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2023-35838",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "WireGuard",
      "fixedVersion": "0.6.1",
      "fix": "WireGuard 0.6.1",
      "url": "https://patchblox.com/security/fix/windows-app/wireguard.wireguard-0.6.1",
      "released": "2026-04-10T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}