High
Security advisory
Crypto++ 5.6.4 incorrectly uses Microsoft's stack-based _malloca and _freea functions. The library will request a block of memory to align a table in memory. If the table is later reallocated, then the wrong pointer could be freed.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-7544
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 09:46 UTC · Revision 1
Source evidence
Crypto++ 5.6.4 incorrectly uses Microsoft's stack-based _malloca and _freea functions. The library will request a block of memory to align a table in memory. If the table is later reallocated, then the wrong pointer could be freed.
osv:CVE-2016-7544
Complete source record
{
"id": "c8c71a30825948d1046b04b5e3d304922a760829ad318c0c553a66c137541cb5",
"url": "https://osv.dev/vulnerability/CVE-2016-7544",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-7544",
"summary": "Crypto++ 5.6.4 incorrectly uses Microsoft's stack-based _malloca and _freea functions. The library will request a block of memory to align a table in memory. If the table is later reallocated, then the wrong pointer could be freed.",
"evidence": "osv:CVE-2016-7544",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2016-7544",
"aliases": [
"CVE-2016-7544"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/weidai11/cryptopp",
"type": "GIT",
"events": [
{
"introduced": "4132d85888ac6c30729f58bb442a4a26a5b16cfe"
},
{
"last_affected": "4132d85888ac6c30729f58bb442a4a26a5b16cfe"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:cryptopp:crypto\\+\\+:5.6.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.4"
},
{
"last_affected": "5.6.4"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"5.6.4",
"CRYPTOPP_5_6_4"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-7544.json"
}
}
],
"modified": "2026-10-20T10:47:56.980607341Z",
"provider": "osv",
"references": [
"https://www.cryptopp.com/release565.html",
"https://github.com/weidai11/cryptopp/issues/302"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2016-7544",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 379843,
"published_at": "2017-01-30T21:59:01.16+00:00"
}