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vuln-cve/data/2026/77xxx/CVE-2026-77372.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-77372",
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"state": "PUBLISHED",
"assignerShortName": "GitHub_M",
"dateReserved": "2026-08-20T19:36:13.805Z",
"datePublished": "2026-11-04T22:53:57.172Z",
"dateUpdated": "2026-11-09T22:03:22.734Z"
},
"containers": {
"cna": {
"title": "VeraCrypt: Heap overflow and out-of-bounds read in Serializable deserialization (elevated Core service input path)",
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-125",
"lang": "en",
"description": "CWE-125: Out-of-bounds Read",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-787",
"lang": "en",
"description": "CWE-787: Out-of-bounds Write",
"type": "CWE"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"attackVector": "LOCAL",
"attackComplexity": "HIGH",
"attackRequirements": "PRESENT",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "HIGH",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "HIGH",
"subAvailabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"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"
}
}
],
"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"
}
],
"affected": [
{
"vendor": "veracrypt",
"product": "VeraCrypt",
"versions": [
{
"version": "< 1.26.30",
"status": "affected"
}
]
}
],
"providerMetadata": {
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M",
"dateUpdated": "2026-11-04T22:53:57.172Z"
},
"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."
}
],
"source": {
"advisory": "GHSA-4j3p-7hp7-xw73",
"discovery": "UNKNOWN"
}
},
"adp": [
{
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-11-09T22:03:11.106487Z",
"id": "CVE-2026-77372",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-11-09T22:03:22.734Z"
}
}
]
}
}