Medium
Security advisory
Arm Mbed TLS before 2.19.0 and Arm Mbed Crypto before 2.0.0, when deterministic ECDSA is enabled, use an RNG with insufficient entropy for blinding, which might allow an attacker to recover a private key via side-channel attacks if a victim signs the same message many times. (For Mbed TLS, the fix is also available in versions 2.7.12 and 2.16.3.)
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-16910
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:36 UTC · Revision 1
Source evidence
Arm Mbed TLS before 2.19.0 and Arm Mbed Crypto before 2.0.0, when deterministic ECDSA is enabled, use an RNG with insufficient entropy for blinding, which might allow an attacker to recover a private key via side-channel attacks if a victim signs the same message many times. (For Mbed TLS, the fix is also available in versions 2.7.12 and 2.16.3.)
osv:CVE-2019-16910
Complete source record
{
"id": "8054cfa60e40c945a4435ace89153497955bb0de5f6f63c9207b1cb7f905cb1b",
"url": "https://osv.dev/vulnerability/CVE-2019-16910",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-16910",
"summary": "Arm Mbed TLS before 2.19.0 and Arm Mbed Crypto before 2.0.0, when deterministic ECDSA is enabled, use an RNG with insufficient entropy for blinding, which might allow an attacker to recover a private key via side-channel attacks if a victim signs the same message many times. (For Mbed TLS, the fix is also available in versions 2.7.12 and 2.16.3.)",
"evidence": "osv:CVE-2019-16910",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2019-16910",
"aliases": [
"CVE-2019-16910"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/Mbed-TLS/mbedtls",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "14c6762351395ecf5d1fb141029d6cc349526846"
},
{
"introduced": "8be0e6db41b4a085e90cb03983f99d3a5158d450"
},
{
"fixed": "04a049bda1ceca48060b57bc4bcf5203ce591421"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.7.12"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.8.0"
},
{
"fixed": "2.16.3"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"mbedtls-2.16.2",
"mbedtls-2.7.11",
"mbedtls-2.7.9",
"mbedtls-2.16.0",
"mbedtls-2.14.0",
"mbedtls-2.7.8",
"mbedtls-2.7.7",
"mbedtls-2.13.1",
"mbedtls-2.13.0",
"mbedtls-2.7.6",
"mbedtls-2.12.0",
"mbedtls-2.7.5",
"mbedtls-2.11.0",
"mbedtls-2.7.4",
"mbedtls-2.10.0",
"mbedtls-2.7.0",
"mbedtls-2.7.3",
"mbedtls-2.9.0",
"mbedtls-2.7.2",
"mbedtls-2.8.0",
"mbedtls-2.7.2-rc1",
"mbedtls-2.7.1",
"mbedtls-2.7.0-rc1",
"mbedtls-2.6.0",
"mbedtls-2.6.0-rc1",
"mbedtls-2.5.1",
"mbedtls-2.5.0",
"mbedtls-2.4.0",
"mbedtls-2.2.1",
"yotta-2.3.1",
"mbedtls-2.3.0",
"mbedtls-2.2.0",
"mbedos-release-15-11",
"mbedos-techcon-oob2",
"mbedtls-2.1.2",
"mbedtls-2.1.0",
"mbedtls-2.1.1",
"beta-oob-2",
"mbedtls-2.0.0",
"polarssl-1.3.9",
"polarssl-1.3.8",
"polarssl-1.3.7",
"polarssl-1.3.6",
"polarssl-1.3.5",
"polarssl-1.3.4",
"polarssl-1.3.3",
"polarssl-1.3.2",
"polarssl-1.3.1",
"polarssl-1.3.0",
"polarssl-1.3.0-rc0",
"polarssl-1.2.6",
"polarssl-1.2.5",
"polarssl-1.2.4",
"polarssl-1.2.2",
"polarssl-1.2.1",
"polarssl-1.2.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-16910.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/armmbed/mbed-crypto",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "92348d1c4931f8c33c2d092928afca556f672c42"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:arm:mbed_crypto:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "2.0.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"mbedcrypto-1.1.1",
"mbedcrypto-1.1.0d2",
"mbedcrypto-1.1.0",
"mbedcrypto-1.1.0d1",
"mbedcrypto-1.1.0d0",
"mbedcrypto-1.0.0d7",
"mbedcrypto-1.0.0",
"mbedcrypto-1.0.0d6",
"mbedcrypto-1.0.0d5",
"mbedcrypto-1.0.0d4",
"mbedcrypto-1.0.0d3",
"mbedcrypto-1.0.0d2",
"mbedcrypto-1.0.0d1",
"mbedcrypto-1.0.0d0",
"mbedcrypto-0.1.0b2",
"mbedcrypto-0.1.0b"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-16910.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/mbed-tls/mbedtls",
"type": "GIT",
"events": [
{
"introduced": "3f8d78411a26e833db18d9fbde0e2f0baeda87f0"
},
{
"fixed": "4197f0e28e15c42e907f873eea292fac31bfa7e6"
},
{
"fixed": "298a43a77ec0ed2c19a8c924ddd8571ef3e65dfd"
},
{
"fixed": "33f66ba6fd234114aa37f0209dac031bb2870a9b"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:trustedfirmware:mbed_tls:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.17.0"
},
{
"fixed": "2.19.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "298a43a77ec0ed2c19a8c924ddd8571ef3e65dfd"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "33f66ba6fd234114aa37f0209dac031bb2870a9b"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-16910.json"
}
}
],
"modified": "2026-10-24T10:47:42.312220878Z",
"provider": "osv",
"references": [
"https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CGSKQSGR5SOBRBXDSSPTCDSBB5K3GMPF/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CSFFOROD6IVLADZHNJC2LPDV7FQRP7XB/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEHHH2DOBXB25CAU3Q6E66X723VAYTB5/",
"https://tls.mbed.org/tech-updates/security-advisories/mbedtls-security-advisory-2019-10",
"https://github.com/ARMmbed/mbedtls/commit/298a43a77ec0ed2c19a8c924ddd8571ef3e65dfd",
"https://github.com/ARMmbed/mbedtls/commit/33f66ba6fd234114aa37f0209dac031bb2870a9b"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "29"
},
{
"last_affected": "29"
},
{
"introduced": "30"
},
{
"last_affected": "30"
},
{
"introduced": "31"
},
{
"last_affected": "31"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-16910",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 441484,
"published_at": "2019-09-26T13:15:10.79+00:00"
}