mbedtls — security advisory
An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. An adversary with access to precise enough information about memory accesses (typically, an untrusted operating system attacking a secure enclave) can recover an RSA private key after observing the victim performing a single private-key operation, if the window size (MBEDTLS_MPI_WINDOW_SIZE) used for the exponentiation is 3 or smaller.
- Products
- mbedtls
- Affected versions
- Not specified
- Fixed versions
- 2.28.2-1
- CVEs
- CVE-2022-46392
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 15:02 UTC · Revision 1
Source evidence
An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. An adversary with access to precise enough information about memory accesses (typically, an untrusted operating system attacking a secure enclave) can recover an RSA private key after observing the victim performing a single private-key operation, if the window size (MBEDTLS_MPI_WINDOW_SIZE) used for the exponentiation is 3 or smaller.
osv:DEBIAN-CVE-2022-46392
mbedtls
Fixed versions: 2.28.2-1
mbedtls
Fixed versions: 2.28.2-1
mbedtls
Fixed versions: 2.28.2-1
Complete source record
{
"id": "af32aa164dbc90512f4c6d6781d9817ababfc45e48f646ec2da8ac2b8aea09ba",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-46392",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2022-46392",
"summary": "An issue was discovered in Mbed TLS before 2.28.2 and 3.x before 3.3.0. An adversary with access to precise enough information about memory accesses (typically, an untrusted operating system attacking a secure enclave) can recover an RSA private key after observing the victim performing a single private-key operation, if the window size (MBEDTLS_MPI_WINDOW_SIZE) used for the exponentiation is 3 or smaller.",
"evidence": "osv:DEBIAN-CVE-2022-46392",
"products": [
{
"name": {
"value": "mbedtls",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.28.2-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "mbedtls",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.28.2-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
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"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.28.2-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2022-46392",
"aliases": [
"DEBIAN-CVE-2022-46392"
],
"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": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.28.2-1"
}
]
}
],
"package": {
"name": "mbedtls",
"purl": "pkg:deb/debian/mbedtls?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-46392.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.28.2-1"
}
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}
],
"package": {
"name": "mbedtls",
"purl": "pkg:deb/debian/mbedtls?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-46392.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "2.28.2-1"
}
]
}
],
"package": {
"name": "mbedtls",
"purl": "pkg:deb/debian/mbedtls?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-46392.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-15T08:02:46.186441498Z",
"provider": "osv",
"upstream": [
"CVE-2022-46392"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2022-46392"
]
},
"related_cves": [
{
"value": "CVE-2022-46392",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 324185,
"published_at": "2022-12-15T23:15:10.513+00:00"
}