{
  "cveId": "CVE-2026-75900",
  "url": "https://patchblox.com/security/cve/CVE-2026-75900",
  "summary": "CVE-2026-75900 is fixed in swtpm on 1 platform, first by DEBIAN-CVE-2026-75900, released August 29, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Swtpm: swtpm: out-of-bounds read in swtpm_nvram_checkheader due to sizeof(pointer) vs sizeof(struct) mismatch",
  "description": "An out-of-bounds read vulnerability was found in swtpm\u0027s SWTPM_NVRAM_CheckHeader() function. The entry guard checks the buffer length against sizeof(bh), where bh is a pointer, instead of sizeof(*bh), the actual struct size. This allows an undersized buffer to pass validation, causing a 2-byte heap overread on 64-bit systems (6 bytes on 32-bit) when accessing the totlen field. This may cause daemon termination on some platforms and leaks heap data to the log.",
  "published": "2026-08-19T08:17:14Z",
  "severity": "Moderate",
  "cvss": 6.1,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H",
  "cwe": "Out-of-bounds Read",
  "epss": 0.00111,
  "epssPercentile": 0.01354,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-75900",
  "fixes": [
    {
      "platform": "linux",
      "product": "swtpm",
      "release": "Debian 14",
      "fixedVersion": "0.10.2-1",
      "fix": "DEBIAN-CVE-2026-75900",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-75900",
      "released": "2026-08-29T00:46:20Z"
    },
    {
      "platform": "linux",
      "product": "swtpm",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "0.10.2-160000.1.1",
      "fix": "OPENSUSE-SU-2026:22048-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22048-1",
      "released": "2026-10-07T09:32:20Z"
    },
    {
      "platform": "linux",
      "product": "swtpm",
      "release": "sles 15.7",
      "fixedVersion": "0.9.0-150700.3.3.1",
      "fix": "SUSE-SU-2026:4366-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4366-1",
      "released": "2026-09-28T15:01:36Z"
    },
    {
      "platform": "linux",
      "product": "swtpm",
      "release": "sles 16.0",
      "fixedVersion": "0.10.2-160000.1.1",
      "fix": "SUSE-SU-2026:24156-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24156-1",
      "released": "2026-10-07T09:30:38Z"
    }
  ],
  "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"
  }
}