{
  "cveId": "CVE-2026-77372",
  "url": "https://patchblox.com/security/cve/CVE-2026-77372",
  "summary": "CVE-2026-77372 is fixed in VeraCrypt on 1 platform by VeraCrypt 1.26.31 (version 1.26.31), released November 2, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "VeraCrypt: Heap overflow and out-of-bounds read in Serializable deserialization (elevated Core service input path)",
  "description": "VeraCrypt provides disk encryption with strong security based on TrueCrypt. Prior to 1.26.30, the Unix, macOS, and FreeBSD serialization paths in src/Platform/Serializer.cpp and src/Volume/VolumePassword.cpp accept untrusted length and count values when deserializing data that can cross from the unprivileged GUI or CLI to the root CoreService helper. Serializer::DeserializeWString allocates floor(size / sizeof(wchar_t)) elements but reads size bytes, so a non-aligned size can overflow the heap allocation. VolumePassword::Deserialize accepts PasswordSize values larger than the fixed 128-byte PasswordBuffer, allowing downstream DataPtr() and Size() consumers such as the KDF to read beyond the buffer. DeserializeString, DeserializeWString, and the string and wide-string list readers also lack allocation and collection bounds, which can exhaust memory, and a zero-length DeserializeString can access an empty vector. Windows uses a different path, and the immediate CoreService pipe writer is the same-user parent process, so the documented exposure is a local defense-in-depth boundary rather than a remote attack. This issue is fixed in 1.26.30.",
  "published": "2026-11-04T23:17:58Z",
  "severity": "",
  "cvss": 8.8,
  "cwe": "CWE-125: Out-of-bounds Read",
  "epss": 0.00098,
  "epssPercentile": 0.00774,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://nvd.nist.gov/vuln/detail/CVE-2026-77372",
  "fixes": [
    {
      "platform": "windows-app",
      "product": "VeraCrypt",
      "fixedVersion": "1.26.31",
      "fix": "VeraCrypt 1.26.31",
      "url": "https://patchblox.com/security/fix/windows-app/idrix.veracrypt-1.26.31",
      "released": "2026-11-02T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-10T13:56:55Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}