High
esptool — security advisory
An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
- Products
- esptool
- Affected versions
- 0.4.6-1, 2.1+dfsg1-1, 2.1+dfsg1-2, 2.6+dfsg-1, 2.8+dfsg-1, 4.6.2+dfsg-0.1, 4.7.0+dfsg-0.1, 4.7.0+dfsg-0.2
- Fixed versions
- Not specified
- CVEs
- CVE-2023-46894
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:43 UTC · Revision 1
Source evidence
An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.
osv:UBUNTU-CVE-2023-46894
esptool
Fixed versions: Not specified
esptool
Fixed versions: Not specified
esptool
Fixed versions: Not specified
esptool
Fixed versions: Not specified
esptool
Fixed versions: Not specified
esptool
Fixed versions: Not specified
esptool
Fixed versions: Not specified
esptool
Fixed versions: Not specified
Complete source record
{
"id": "107fd7c2b732890953bff601ac6e0ccda66dc74975075977eb4a580400ec1baa",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2023-46894",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2023-46894",
"summary": "An issue discovered in esptool 4.6.2 allows attackers to view sensitive information via weak cryptographic algorithm.",
"evidence": "osv:UBUNTU-CVE-2023-46894",
"products": [
{
"name": {
"value": "esptool",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.4.6-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "esptool",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.4.6-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.1+dfsg1-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.1+dfsg1-2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "esptool",
"evidence": "/affected/2/package/name"
},
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"affected_versions": [
{
"value": "2.6+dfsg-1",
"evidence": "/affected/2/versions"
},
{
"value": "2.8+dfsg-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
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},
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{
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}
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{
"name": {
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"evidence": "/affected/4/package/name"
},
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"fixed_versions": [],
"affected_versions": [
{
"value": "4.6.2+dfsg-0.1",
"evidence": "/affected/4/versions"
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{
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"evidence": "/affected/4/versions"
}
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},
{
"name": {
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"evidence": "/affected/5/package/name"
},
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"affected_versions": [
{
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]
},
{
"name": {
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"evidence": "/affected/6/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "4.7.0+dfsg-0.2",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "esptool",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.7.0+dfsg-0.1",
"evidence": "/affected/7/versions"
},
{
"value": "4.7.0+dfsg-0.2",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2023-46894",
"aliases": [
"UBUNTU-CVE-2023-46894"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "esptool",
"purl": "pkg:deb/ubuntu/esptool?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"0.4.6-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46894.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "esptool",
"binary_version": "0.4.6-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "esptool",
"purl": "pkg:deb/ubuntu/esptool?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"0.4.6-1",
"2.1+dfsg1-1",
"2.1+dfsg1-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46894.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "esptool",
"binary_version": "2.1+dfsg1-2"
}
]
}
},
{
"ranges": [
{
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"events": [
{
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]
}
],
"package": {
"name": "esptool",
"purl": "pkg:deb/ubuntu/esptool?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"2.6+dfsg-1",
"2.8+dfsg-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46894.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "esptool",
"binary_version": "2.8+dfsg-1"
}
]
}
},
{
"ranges": [
{
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"events": [
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"package": {
"name": "esptool",
"purl": "pkg:deb/ubuntu/esptool?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"2.8+dfsg-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46894.json"
},
"ecosystem_specific": {
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{
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}
},
{
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"package": {
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"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"4.6.2+dfsg-0.1",
"4.7.0+dfsg-0.1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-46894.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "esptool",
"binary_version": "4.7.0+dfsg-0.1"
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},
{
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"package": {
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"ecosystem": "Ubuntu:25.10"
},
"versions": [
"4.7.0+dfsg-0.1"
],
"database_specific": {
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},
"ecosystem_specific": {
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{
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"ecosystem": "Ubuntu:26.10"
},
"versions": [
"4.7.0+dfsg-0.2"
],
"database_specific": {
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},
"ecosystem_specific": {
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{
"binary_name": "esptool",
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}
]
}
},
{
"ranges": [
{
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],
"package": {
"name": "esptool",
"purl": "pkg:deb/ubuntu/esptool?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"4.7.0+dfsg-0.1",
"4.7.0+dfsg-0.2"
],
"database_specific": {
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},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "esptool",
"binary_version": "4.7.0+dfsg-0.2"
}
]
}
}
],
"modified": "2026-10-17T12:57:21.476237851Z",
"provider": "osv",
"upstream": [
"CVE-2023-46894"
],
"references": [
"https://ubuntu.com/security/CVE-2023-46894",
"https://github.com/espressif/esptool/issues/926",
"https://www.cve.org/CVERecord?id=CVE-2023-46894"
]
},
"related_cves": [
{
"value": "CVE-2023-46894",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 357301,
"published_at": "2023-11-09T16:15:00+00:00"
}