High
Security advisory
Espressif ESP-IDF 2.x, 3.0.x through 3.0.9, 3.1.x through 3.1.7, 3.2.x through 3.2.3, 3.3.x through 3.3.2, and 4.0.x through 4.0.1 has a Buffer Overflow in BluFi provisioning in btc_blufi_recv_handler function in blufi_prf.c. An attacker can send a crafted BluFi protocol Write Attribute command to characteristic 0xFF01. With manipulated packet fields, there is a buffer overflow.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-16146
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 10:54 UTC · Revision 1
Source evidence
Espressif ESP-IDF 2.x, 3.0.x through 3.0.9, 3.1.x through 3.1.7, 3.2.x through 3.2.3, 3.3.x through 3.3.2, and 4.0.x through 4.0.1 has a Buffer Overflow in BluFi provisioning in btc_blufi_recv_handler function in blufi_prf.c. An attacker can send a crafted BluFi protocol Write Attribute command to characteristic 0xFF01. With manipulated packet fields, there is a buffer overflow.
osv:CVE-2020-16146
Complete source record
{
"id": "ae2717ac3a0f0dc9f2b97dd181a01dc83c111a80cbb6899c82205cf31a2dda69",
"url": "https://osv.dev/vulnerability/CVE-2020-16146",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-16146",
"summary": "Espressif ESP-IDF 2.x, 3.0.x through 3.0.9, 3.1.x through 3.1.7, 3.2.x through 3.2.3, 3.3.x through 3.3.2, and 4.0.x through 4.0.1 has a Buffer Overflow in BluFi provisioning in btc_blufi_recv_handler function in blufi_prf.c. An attacker can send a crafted BluFi protocol Write Attribute command to characteristic 0xFF01. With manipulated packet fields, there is a buffer overflow.",
"evidence": "osv:CVE-2020-16146",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-16146",
"aliases": [
"CVE-2020-16146"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/espressif/esp-idf",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "8bca703467be0d5e43e2a3dce2ca7727ca826474"
},
{
"last_affected": "4c81978a3e2220674a432a588292a4c860eef27b"
},
{
"introduced": "3f8f618df5157906e2ebe65f94b003e3ac1b82a7"
},
{
"last_affected": "f3704f027e70a370bed3852f39c2ce48b9e8c7dc"
},
{
"introduced": "22489d70214a5b7650ab197ffd6ab73e9c50a772"
},
{
"last_affected": "d8e057b02c6ecf27b12a36a91a39bc506554f1f8"
},
{
"introduced": "4b91c82cc447640e5b61407e810f1d6f3eabd233"
},
{
"last_affected": "ca1e5e5bc52182a577f1706c8dcbb4d9d7afe310"
},
{
"introduced": "c18890875e64de59581dc1bfe5fd094b262a7dc4"
},
{
"last_affected": "9e70825d1e1cbf7988cf36981774300066580ea7"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.0.0"
},
{
"last_affected": "2.1.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0"
},
{
"last_affected": "4.0.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.0"
},
{
"last_affected": "3.0.9"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.1"
},
{
"last_affected": "3.1.7"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2"
},
{
"last_affected": "3.2.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:espressif:esp-idf:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.3"
},
{
"last_affected": "3.3.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v4.0.1",
"v3.1.7",
"v3.3.2",
"v4.0-rc",
"v4.0",
"v3.3.1",
"v4.0-beta2",
"v3.0.9",
"v3.1.6",
"v3.2.3",
"v3.3",
"v4.0-beta1",
"v3.3-rc",
"v3.1.5",
"v3.2.2",
"v3.0.8",
"v3.2.1",
"v3.3-beta3",
"v3.1.4",
"v3.2-rc",
"v3.2",
"v4.0-dev",
"v3.3-beta2",
"v3.2-beta3",
"v3.1.3",
"v3.1.2",
"v3.0.7-rc",
"v3.0.7",
"v3.3-beta1",
"v3.2-beta1",
"v3.1.1",
"v3.0.6",
"v3.0.6-rc",
"v3.3-dev",
"v3.1.1-rc2",
"v3.0.5-rc",
"v3.0.5",
"v3.0.4-rc1",
"v3.0.4",
"v3.1-rc2",
"v3.1",
"v3.1-rc1",
"v3.0.3-rc",
"v3.0.3",
"v3.0.2",
"v3.1-beta1",
"v3.2-dev",
"v3.0.1-rc",
"v3.0.1",
"v3.0",
"v2.1.1",
"v3.0-rc1",
"v3.1-dev",
"v2.1",
"v2.1-rc1",
"v2.0-rc1",
"v1.0",
"v0.9"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-16146.json"
}
}
],
"modified": "2026-10-20T10:51:58.712123943Z",
"provider": "osv",
"references": [
"https://github.com/espressif/esp-idf",
"https://github.com/pokerfacett/MY_CVE_CREDIT/blob/master/CVE-2020-16146.md"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-16146",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 383183,
"published_at": "2021-01-12T03:15:12.687+00:00"
}