Security advisory
In OpenSSL 1.1.0 before 1.1.0c, applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-7053
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:34 UTC · Revision 1
Source evidence
In OpenSSL 1.1.0 before 1.1.0c, applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected.
osv:CVE-2016-7053
Complete source record
{
"id": "c9f5e7a0509394e15e330aee4c8201556f6b3661734d3c28d6e1d4e900064a0d",
"url": "https://osv.dev/vulnerability/CVE-2016-7053",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-7053",
"summary": "In OpenSSL 1.1.0 before 1.1.0c, applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected.",
"evidence": "osv:CVE-2016-7053",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2016-7053",
"aliases": [
"CVE-2016-7053"
],
"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/openssl/openssl",
"type": "GIT",
"events": [
{
"introduced": "7ea5bd2b52d0e81eaef3d109b3b12545306f201c"
},
{
"last_affected": "7ea5bd2b52d0e81eaef3d109b3b12545306f201c"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:openssl:openssl:1.1.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.1.0"
},
{
"last_affected": "1.1.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.1.0a:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.1.0a"
},
{
"last_affected": "1.1.0a"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:openssl:openssl:1.1.0b:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.1.0b"
},
{
"last_affected": "1.1.0b"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"1.1.0",
"OpenSSL_1_1_0l"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-7053.json"
}
}
],
"modified": "2026-10-24T10:30:20.257811111Z",
"provider": "osv",
"references": [
"https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03744en_us",
"https://www.openssl.org/news/secadv/20161110.txt"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2016-7053",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 430227,
"published_at": "2017-05-04T19:29:00.213+00:00"
}