HighFix available
wireshark — security advisory
NULL pointer exception in the IEEE 802.11 dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
- Products
- wireshark
- Affected versions
- Not specified
- Fixed versions
- 3.6.0-1
- CVEs
- CVE-2021-39928
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 02:01 UTC · Revision 1
Source evidence
NULL pointer exception in the IEEE 802.11 dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
osv:DEBIAN-CVE-2021-39928
wireshark
Fixed versions: 3.6.0-1
wireshark
Fixed versions: 3.6.0-1
wireshark
Fixed versions: 3.6.0-1
Complete source record
{
"id": "715a681458561223c43804593c7c10ec80ba650730f6377d64a916c4f7765366",
"url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-39928",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "DEBIAN-CVE-2021-39928",
"summary": "NULL pointer exception in the IEEE 802.11 dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file",
"evidence": "osv:DEBIAN-CVE-2021-39928",
"products": [
{
"name": {
"value": "wireshark",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.0-1",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "wireshark",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.0-1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "wireshark",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.6.0-1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "DEBIAN-CVE-2021-39928",
"aliases": [
"DEBIAN-CVE-2021-39928"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.0-1"
}
]
}
],
"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-2021-39928.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.0-1"
}
]
}
],
"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-2021-39928.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.0-1"
}
]
}
],
"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-2021-39928.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
],
"modified": "2026-10-23T18:05:23.081375365Z",
"provider": "osv",
"upstream": [
"CVE-2021-39928"
],
"references": [
"https://security-tracker.debian.org/tracker/CVE-2021-39928"
]
},
"related_cves": [
{
"value": "CVE-2021-39928",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 424375,
"published_at": "2021-11-18T19:15:08.467+00:00"
}