{
  "cveId": "CVE-2026-42764",
  "url": "https://patchblox.com/security/cve/CVE-2026-42764",
  "summary": "CVE-2026-42764 is fixed in 15 products on 1 platform, first by libssl3t64 3.5.5-1ubuntu3.2, released June 8, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "openssl: Issue summary: Receiving a QUIC initial packet with an invalid token may trigger a NULL pointer dereference in the Op...",
  "description": "Issue summary: Receiving a QUIC initial packet with an invalid token may trigger a NULL pointer dereference in the OpenSSL QUIC server with address validation disabled.  Impact summary: NULL pointer dereference typically causes abnormal termination of the affected QUIC server process and a Denial of Service.  If the address validation is disabled in the OpenSSL QUIC server implementation, an attacker can crash the server by sending an initial packet with an invalid or expired token.  By default, the client address validation is enabled in the OpenSSL QUIC server implementation, which makes the default configuration not vulnerable to this issue. However if the SSL_LISTENER_FLAG_NO_VALIDATE is used with the SSL_new_listener() call, the address validation is disabled making the vulnerable code reachable.  The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.",
  "published": "2026-06-08T17:00:00Z",
  "severity": "high",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
  "epss": 0.01165,
  "epssPercentile": 0.67493,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libssl3t64",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "3.5.3-1ubuntu3.4",
      "fix": "libssl3t64 3.5.3-1ubuntu3.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-libssl3t64-3.5.3-1ubuntu3.4",
      "released": "2026-06-24T14:07:44Z"
    },
    {
      "platform": "linux",
      "product": "libssl3t64",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "3.5.5-1ubuntu3.2",
      "fix": "libssl3t64 3.5.5-1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-libssl3t64-3.5.5-1ubuntu3.2",
      "released": "2026-06-08T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "nodejs24",
      "release": "sles 15.7",
      "fixedVersion": "24.18.1-150700.15.18.1",
      "fix": "SUSE-SU-2026:3835-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3835-1",
      "released": "2026-09-10T16:05:54Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "3.5.6-1~deb13u2",
      "fix": "DEBIAN-CVE-2026-42764",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42764",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Debian 14",
      "fixedVersion": "3.6.3-1",
      "fix": "DEBIAN-CVE-2026-42764",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-42764",
      "released": "2026-06-24T14:07:24Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "RHEL 10",
      "fixedVersion": "3.5.5-4.el10_2",
      "fix": "RHSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-25237",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "RHEL 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RHSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-25239",
      "released": "2026-06-24T14:09:17Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Ubuntu 25.10 (questing)",
      "fixedVersion": "3.5.3-1ubuntu3.4",
      "fix": "openssl 3.5.3-1ubuntu3.4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-questing-openssl-3.5.3-1ubuntu3.4",
      "released": "2026-06-24T14:07:44Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "3.5.5-1ubuntu3.2",
      "fix": "openssl 3.5.5-1ubuntu3.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-openssl-3.5.5-1ubuntu3.2",
      "released": "2026-06-08T17:00:00Z"
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      "platform": "linux",
      "product": "openssl",
      "release": "almalinux 10",
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      "fix": "ALSA-2026:25237",
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      "released": "2026-06-11T00:00:00Z"
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    {
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      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "ALSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/alsa-2026-25239",
      "released": "2026-06-11T00:00:00Z"
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    {
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      "product": "openssl",
      "release": "amzn 2023",
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      "fix": "ALAS2023-2026-1853",
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      "released": "2026-06-22T09:00:00Z"
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      "fix": "ELSA-2026-25237",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25237",
      "released": "2026-07-28T00:00:00Z"
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    {
      "platform": "linux",
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      "fix": "ELSA-2026-25239",
      "url": "https://patchblox.com/security/fix/linux/elsa-2026-25239",
      "released": "2026-06-23T00:00:00Z"
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    {
      "platform": "linux",
      "product": "openssl",
      "release": "rocky 10",
      "fixedVersion": "1:3.5.5-4.el10_2",
      "fix": "RLSA-2026:25237",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-25237",
      "released": "2026-06-13T00:05:06Z"
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    {
      "platform": "linux",
      "product": "openssl",
      "release": "rocky 9",
      "fixedVersion": "1:3.5.5-4.el9_8",
      "fix": "RLSA-2026:25239",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-25239",
      "released": "2026-06-13T00:03:17Z"
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    {
      "platform": "linux",
      "product": "openssl",
      "release": "sles 15.7",
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      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-3835-1",
      "released": "2026-09-10T16:05:54Z"
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      "product": "openssl-3",
      "release": "opensuse-leap 16.0",
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      "fix": "OPENSUSE-SU-2026:21005-1",
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      "released": "2026-06-22T12:26:17Z"
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      "product": "openssl-3",
      "release": "sles 15.7",
      "fixedVersion": "3.5.0-150700.5.45.2",
      "fix": "SUSE-SU-2026:3835-1",
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      "released": "2026-09-10T16:05:54Z"
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      "fix": "SUSE-SU-2026:22315-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-22315-1",
      "released": "2026-06-22T12:23:46Z"
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      "release": "amzn 2023",
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      "released": "2026-06-22T09:00:00Z"
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      "released": "2026-06-22T09:00:00Z"
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      "released": "2026-06-24T14:09:17Z"
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      "fix": "ELSA-2026-25239",
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      "fix": "ELSA-2026-25239",
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    {
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      "released": "2026-06-08T17:00:00Z"
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    {
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      "released": "2026-06-22T09:00:00Z"
    }
  ],
  "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"
  }
}