{
  "cveId": "CVE-2026-55999",
  "url": "https://patchblox.com/security/cve/CVE-2026-55999",
  "summary": "CVE-2026-55999 is fixed in 21 products on 1 platform, first by SUSE-SU-2026:2786-1, released July 8, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "xorg-x11-server-Xwayland: Local attackers with a X connection able to provide PCX fonts to the X \nserver xorg-server before 21.2.24 and xwaylan...",
  "description": "Local attackers with a X connection able to provide PCX fonts to the X \nserver xorg-server before 21.2.24 and xwayland before 24.1.13 could \ncause a heap buffer overflow via SetFont due to missing glyph boundary checks.",
  "published": "2026-07-08T00:00:00Z",
  "severity": "important",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00333,
  "epssPercentile": 0.26702,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "xorg-server",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2:21.1.16-1.3\u002Bdeb13u4",
      "fix": "DEBIAN-CVE-2026-55999",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-55999",
      "released": "2026-07-08T09:16:29Z"
    },
    {
      "platform": "linux",
      "product": "xorg-server",
      "release": "Debian 14",
      "fixedVersion": "2:21.1.24-1",
      "fix": "DEBIAN-CVE-2026-55999",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-55999",
      "released": "2026-07-08T09:16:29Z"
    },
    {
      "platform": "linux",
      "product": "xorg-x11-server",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "21.1.15-160000.6.1",
      "fix": "OPENSUSE-SU-2026:21273-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21273-1",
      "released": "2026-07-08T17:58:06Z"
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    {
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      "release": "rocky 8",
      "fixedVersion": "0:1.20.11-28.el8_10.3",
      "fix": "RLSA-2026:38487",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-38487",
      "released": "2026-07-14T06:00:51Z"
    },
    {
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      "product": "xorg-x11-server",
      "release": "rocky 9",
      "fixedVersion": "0:1.20.11-34.el9_8.3",
      "fix": "RLSA-2026:38486",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2026-38486",
      "released": "2026-07-14T12:03:23Z"
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    {
      "platform": "linux",
      "product": "xorg-x11-server",
      "release": "sles 15.6",
      "fixedVersion": "21.1.11-150600.5.31.1",
      "fix": "SUSE-SU-2026:2786-1",
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      "released": "2026-07-08T07:16:50Z"
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      "product": "xorg-x11-server",
      "release": "sles 15.7",
      "fixedVersion": "21.1.15-150700.5.22.1",
      "fix": "SUSE-SU-2026:2788-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-2788-1",
      "released": "2026-07-08T07:22:14Z"
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      "platform": "linux",
      "product": "xorg-x11-server-Xdmx",
      "release": "RHEL 8",
      "fixedVersion": "0:1.20.11-28.el8_10.3",
      "fix": "RHSA-2026:38487",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2026-38487",
      "released": "2026-07-13T16:21:15Z"
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      "platform": "linux",
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      "released": "2026-07-13T16:22:40Z"
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      "fix": "ALSA-2026:38487",
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      "released": "2026-07-13T00:00:00Z"
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      "fix": "ELSA-2026-38487",
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      "released": "2026-09-01T00:00:00Z"
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