Critical
Security advisory
Heap-based buffer overflow in the P-521 reduction function in Botan 1.11.x before 1.11.27 allows remote attackers to cause a denial of service (memory overwrite and crash) or execute arbitrary code via unspecified vectors.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-2196
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:47 UTC · Revision 1
Source evidence
Heap-based buffer overflow in the P-521 reduction function in Botan 1.11.x before 1.11.27 allows remote attackers to cause a denial of service (memory overwrite and crash) or execute arbitrary code via unspecified vectors.
osv:CVE-2016-2196
Complete source record
{
"id": "3158b8baf1fb93036a664307aa97807d70e77a3298555df4a71a5bac26af44e7",
"url": "https://osv.dev/vulnerability/CVE-2016-2196",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-2196",
"summary": "Heap-based buffer overflow in the P-521 reduction function in Botan 1.11.x before 1.11.27 allows remote attackers to cause a denial of service (memory overwrite and crash) or execute arbitrary code via unspecified vectors.",
"evidence": "osv:CVE-2016-2196",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2016-2196",
"aliases": [
"CVE-2016-2196"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/randombit/botan",
"type": "GIT",
"events": [
{
"introduced": "ee912cd748a9b0bf56c84a49896dd2d57e0f81a6"
},
{
"last_affected": "9d3ad9a0f44a9321185ed9f221c828dac81b9f0c"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.0"
},
{
"last_affected": "1.11.0"
}
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"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.1"
},
{
"last_affected": "1.11.1"
}
],
"source": "CPE_STRING"
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{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.2"
},
{
"last_affected": "1.11.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.3"
},
{
"last_affected": "1.11.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.4"
},
{
"last_affected": "1.11.4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.5"
},
{
"last_affected": "1.11.5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.6:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.6"
},
{
"last_affected": "1.11.6"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.7:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.7"
},
{
"last_affected": "1.11.7"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.8:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.8"
},
{
"last_affected": "1.11.8"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.9:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.9"
},
{
"last_affected": "1.11.9"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.10:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.10"
},
{
"last_affected": "1.11.10"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.11:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.11"
},
{
"last_affected": "1.11.11"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.12:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.12"
},
{
"last_affected": "1.11.12"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.13:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.13"
},
{
"last_affected": "1.11.13"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.14:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.14"
},
{
"last_affected": "1.11.14"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.15:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.15"
},
{
"last_affected": "1.11.15"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.16:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.16"
},
{
"last_affected": "1.11.16"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.17:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.17"
},
{
"last_affected": "1.11.17"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.18:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.18"
},
{
"last_affected": "1.11.18"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.19:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.19"
},
{
"last_affected": "1.11.19"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.20:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.20"
},
{
"last_affected": "1.11.20"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.21:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.21"
},
{
"last_affected": "1.11.21"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.22:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.22"
},
{
"last_affected": "1.11.22"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.23:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.23"
},
{
"last_affected": "1.11.23"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.24:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.24"
},
{
"last_affected": "1.11.24"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.25:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.25"
},
{
"last_affected": "1.11.25"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:botan_project:botan:1.11.26:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.11.26"
},
{
"last_affected": "1.11.26"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"1.11.0",
"1.11.1",
"1.11.10",
"1.11.11",
"1.11.12",
"1.11.13",
"1.11.14",
"1.11.15",
"1.11.16",
"1.11.17",
"1.11.18",
"1.11.19",
"1.11.2",
"1.11.20",
"1.11.21",
"1.11.22",
"1.11.23",
"1.11.24",
"1.11.25",
"1.11.26",
"1.11.3",
"1.11.4",
"1.11.5",
"1.11.6",
"1.11.7",
"1.11.8",
"1.11.9"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-2196.json"
}
}
],
"modified": "2026-10-24T10:30:44.544937020Z",
"provider": "osv",
"references": [],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2016-2196",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 435922,
"published_at": "2016-05-13T14:59:09.76+00:00"
}