MediumFix available
wireshark — security advisory
Crash in USB HID protocol dissector and possibly other dissectors in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.
- Products
- wireshark
- Affected versions
- Not specified
- Fixed versions
- 3.4.1-1
- CVEs
- CVE-2020-26421
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 13:44 UTC · Revision 1
Source evidence
Crash in USB HID protocol dissector and possibly other dissectors in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.
osv:DEBIAN-CVE-2020-26421
wireshark
Fixed versions: 3.4.1-1
wireshark
Fixed versions: 3.4.1-1
wireshark
Fixed versions: 3.4.1-1
Complete source record
{
"id": "9831b6def551f1ca0a4a79813d4d9cbb288590f2eda12b3785a5334f1f46d9d7",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-26421",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2020-26421",
"summary": "Crash in USB HID protocol dissector and possibly other dissectors in Wireshark 3.4.0 and 3.2.0 to 3.2.8 allows denial of service via packet injection or crafted capture file.",
"evidence": "osv:DEBIAN-CVE-2020-26421",
"products": [
{
"name": {
"value": "wireshark",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.4.1-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "wireshark",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.4.1-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "wireshark",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.4.1-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "medium",
"structured": {
"id": "DEBIAN-CVE-2020-26421",
"aliases": [
"DEBIAN-CVE-2020-26421"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.1-1"
}
]
}
],
"package": {
"name": "wireshark",
"purl": "pkg:deb/debian/wireshark?arch=source&distro=bookworm",
"ecosystem": "Debian:12"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-26421.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.1-1"
}
]
}
],
"package": {
"name": "wireshark",
"purl": "pkg:deb/debian/wireshark?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-26421.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.1-1"
}
]
}
],
"package": {
"name": "wireshark",
"purl": "pkg:deb/debian/wireshark?arch=source&distro=forky",
"ecosystem": "Debian:14"
},
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-26421.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T12:02:40.952197184Z",
"provider": "osv",
"upstream": [
"CVE-2020-26421"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2020-26421"
]
},
"related_cves": [
{
"value": "CVE-2020-26421",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 452748,
"published_at": "2020-12-11T19:15:12.357+00:00"
}