Medium
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
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-26421
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:53 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:CVE-2020-26421
Complete source record
{
"id": "736fa2b1188b565f2d6371d290b23d12244208784e03357e0ada264a8baed9f4",
"url": "https://osv.dev/vulnerability/CVE-2020-26421",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "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:CVE-2020-26421",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-26421",
"aliases": [
"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": [
{
"repo": "https://github.com/wireshark/wireshark",
"type": "GIT",
"events": [
{
"introduced": "e0ed4cfa3d72110257da54c26ad3a28d282ef454"
},
{
"last_affected": "8c208b7f257de50613e1e6a09a5b221f284883a0"
},
{
"introduced": "9733f173ea5e6255e8da208ef183210aa264d948"
},
{
"last_affected": "9733f173ea5e6255e8da208ef183210aa264d948"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.0"
},
{
"last_affected": "3.2.8"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:wireshark:wireshark:3.4.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.4.0"
},
{
"last_affected": "3.4.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"3.4.0",
"wireshark-3.2.8",
"v3.2.8",
"wireshark-3.4.0",
"v3.4.0",
"v3.2.8rc0",
"wireshark-3.2.7",
"v3.2.7",
"v3.2.7rc0",
"wireshark-3.2.6",
"v3.2.6",
"v3.2.6rc0",
"wireshark-3.2.5",
"v3.2.5",
"v3.2.5rc0",
"wireshark-3.2.4",
"v3.2.4",
"v3.2.4rc0",
"wireshark-3.2.3",
"v3.2.3",
"v3.2.3rc0",
"wireshark-3.2.2",
"v3.2.2",
"v3.2.2rc0",
"wireshark-3.2.1",
"v3.2.1",
"v3.2.1rc0",
"wireshark-3.2.0",
"v3.2.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26421.json"
}
},
{
"ranges": [
{
"repo": "https://gitlab.com/wireshark/wireshark",
"type": "GIT",
"events": [
{
"introduced": "e0ed4cfa3d72110257da54c26ad3a28d282ef454"
},
{
"last_affected": "8c208b7f257de50613e1e6a09a5b221f284883a0"
},
{
"introduced": "9733f173ea5e6255e8da208ef183210aa264d948"
},
{
"last_affected": "9733f173ea5e6255e8da208ef183210aa264d948"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.0"
},
{
"last_affected": "3.2.8"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:wireshark:wireshark:3.4.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.4.0"
},
{
"last_affected": "3.4.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"3.4.0",
"wireshark-3.2.8",
"v3.2.8",
"wireshark-3.4.0",
"v3.4.0",
"v3.2.8rc0",
"wireshark-3.2.7",
"v3.2.7",
"v3.2.7rc0",
"wireshark-3.2.6",
"v3.2.6",
"v3.2.6rc0",
"wireshark-3.2.5",
"v3.2.5",
"v3.2.5rc0",
"wireshark-3.2.4",
"v3.2.4",
"v3.2.4rc0",
"wireshark-3.2.3",
"v3.2.3",
"v3.2.3rc0",
"wireshark-3.2.2",
"v3.2.2",
"v3.2.2rc0",
"wireshark-3.2.1",
"v3.2.1",
"v3.2.1rc0",
"wireshark-3.2.0",
"v3.2.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26421.json"
}
}
],
"modified": "2026-10-24T10:50:38.799334492Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M75HYXU36SP6GHIDPHNZGJKEO6TX4C4Y/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YHWDZPWQJMLK64VFDWJC5SEGPNH6Y72Z/",
"https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26421.json",
"https://lists.debian.org/debian-lts-announce/2021/02/msg00008.html",
"https://security.gentoo.org/glsa/202101-12",
"https://www.wireshark.org/security/wnpa-sec-2020-17.html",
"https://gitlab.com/wireshark/wireshark/-/issues/16958",
"https://www.oracle.com/security-alerts/cpuApr2021.html"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "32"
},
{
"last_affected": "32"
},
{
"introduced": "33"
},
{
"last_affected": "33"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*"
],
"vendor_product": "oracle:zfs_storage_appliance_kit",
"extracted_events": [
{
"range": [
{
"introduced": "8.8"
},
{
"last_affected": "8.8"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-26421",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 442385,
"published_at": "2020-12-11T19:15:12.357+00:00"
}