{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "VeraCrypt",
          "vendor": "veracrypt",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.26.30"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "attackVector": "LOCAL",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-125",
              "description": "CWE-125: Out-of-bounds Read",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "CWE-787: Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-04T22:53:57.172Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/veracrypt/VeraCrypt/security/advisories/GHSA-4j3p-7hp7-xw73",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/veracrypt/VeraCrypt/security/advisories/GHSA-4j3p-7hp7-xw73"
        },
        {
          "name": "https://github.com/veracrypt/VeraCrypt/commit/fb9d96c52dace4d34c5427402b512e8de5f832d6",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/veracrypt/VeraCrypt/commit/fb9d96c52dace4d34c5427402b512e8de5f832d6"
        },
        {
          "name": "https://github.com/veracrypt/VeraCrypt/releases/tag/VeraCrypt_1.26.30",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/veracrypt/VeraCrypt/releases/tag/VeraCrypt_1.26.30"
        }
      ],
      "source": {
        "advisory": "GHSA-4j3p-7hp7-xw73",
        "discovery": "UNKNOWN"
      },
      "title": "VeraCrypt: Heap overflow and out-of-bounds read in Serializable deserialization (elevated Core service input path)"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-77372",
    "datePublished": "2026-11-04T22:53:57.172Z",
    "dateReserved": "2026-08-20T19:36:13.805Z",
    "dateUpdated": "2026-11-04T22:53:57.172Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}