{
  "cveId": "CVE-2018-14598",
  "url": "https://patchblox.com/security/cve/CVE-2018-14598",
  "summary": "CVE-2018-14598 is fixed in 3 products on 1 platform, first by libx11-6 2:1.6.4-3ubuntu0.1, released August 23, 2018. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libx11-6: An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5",
  "description": "An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed later on, leading to DoS (segmentation fault).",
  "published": "2018-08-23T17:00:00Z",
  "severity": "Medium",
  "epss": 0.04175,
  "epssPercentile": 0.90968,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libx11-6",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.6.4-3ubuntu0.1",
      "fix": "libx11-6 2:1.6.4-3ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libx11-6-2-1.6.4-3ubuntu0.1",
      "released": "2018-08-23T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11-data",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.6.4-3ubuntu0.1",
      "fix": "libx11-data 2:1.6.4-3ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libx11-data-2-1.6.4-3ubuntu0.1",
      "released": "2018-08-23T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libx11-xcb1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2:1.6.4-3ubuntu0.1",
      "fix": "libx11-xcb1 2:1.6.4-3ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libx11-xcb1-2-1.6.4-3ubuntu0.1",
      "released": "2018-08-23T17:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}