{
  "cveId": "CVE-2026-64193",
  "url": "https://patchblox.com/security/cve/CVE-2026-64193",
  "summary": "CVE-2026-64193 is fixed in 4 products on 1 platform, first by DEBIAN-CVE-2026-64193, released July 24, 2026. It is not reported as exploited. Patch Radar priority: Urgent.",
  "title": "libnet-dns-perl: Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR",
  "description": "Net::DNS versions through 1.55 for Perl allow remote execution injection via EDNS EXTENDED ERROR.  Net::DNS::RR::OPT::EXTENDED_ERROR::_decompose parses the EXTRA-TEXT field of an EDNS EXTENDED-ERROR option (RFC 8914) by tokenising the raw bytes and passing the result to Perl\u0027s eval. There is some escaping done for $ and @, but not for backticks. This can be exploited for command execution if $pkt-\u003Eedns-\u003Eoption(\u0027EXTENDED-ERROR\u0027) is called in array context, for example with a payload of {0:\u0060\u0022\u003Ccommand\u003E\u0022\u0060} in EXTRA-TEXT.",
  "published": "2026-07-20T19:17:30Z",
  "severity": "critical",
  "cvss": 9.8,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.01439,
  "epssPercentile": 0.73339,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libnet-dns-perl",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "1.56-0\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-64193",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-64193",
      "released": "2026-07-24T13:34:41Z"
    },
    {
      "platform": "linux",
      "product": "libnet-dns-perl",
      "release": "Debian 14",
      "fixedVersion": "1.56-1",
      "fix": "DEBIAN-CVE-2026-64193",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-64193",
      "released": "2026-07-24T13:34:41Z"
    },
    {
      "platform": "linux",
      "product": "perl-Net-DNS",
      "release": "amzn 2023",
      "fixedVersion": "1.56-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-2046",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2046",
      "released": "2026-08-03T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-Net-DNS",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "1.570.0-bp160.1.1",
      "fix": "OPENSUSE-SU-2026:21859-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21859-1",
      "released": "2026-09-15T13:20:42Z"
    },
    {
      "platform": "linux",
      "product": "perl-Net-DNS-Nameserver",
      "release": "amzn 2023",
      "fixedVersion": "1.56-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-2046",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2046",
      "released": "2026-08-03T09:00:00Z"
    },
    {
      "platform": "linux",
      "product": "perl-Net-DNS-tests",
      "release": "amzn 2023",
      "fixedVersion": "1.56-1.amzn2023.0.1",
      "fix": "ALAS2023-2026-2046",
      "url": "https://patchblox.com/security/fix/linux/alas2023-2026-2046",
      "released": "2026-08-03T09:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}