MediumFix available
wireshark — security advisory
Memory leak in RTPS protocol dissector 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-2020-26420
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 13:45 UTC · Revision 1
Source evidence
Memory leak in RTPS protocol dissector 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-2020-26420
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": "a5488ae434d5394aaf8dcc07eceb59ee72f104a4e038ccc216ea2bfef34b82df",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2020-26420",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2020-26420",
"summary": "Memory leak in RTPS protocol dissector 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-2020-26420",
"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-2020-26420",
"aliases": [
"DEBIAN-CVE-2020-26420"
],
"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-2020-26420.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-2020-26420.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-2020-26420.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-26T12:02:41.399974491Z",
"provider": "osv",
"upstream": [
"CVE-2020-26420"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2020-26420"
]
},
"related_cves": [
{
"value": "CVE-2020-26420",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 452763,
"published_at": "2020-12-11T19:15:12.293+00:00"
}