Medium
Security advisory
Crash in the pcapng file parser in Wireshark 3.6.0 allows denial of service via crafted capture file
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-4183
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:50 UTC · Revision 1
Source evidence
Crash in the pcapng file parser in Wireshark 3.6.0 allows denial of service via crafted capture file
osv:CVE-2021-4183
Complete source record
{
"id": "cddf252dc237b5a0b2eab95153cf946f4432571cd81f4493fbe7562f61ef9a99",
"url": "https://osv.dev/vulnerability/CVE-2021-4183",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-4183",
"summary": "Crash in the pcapng file parser in Wireshark 3.6.0 allows denial of service via crafted capture file",
"evidence": "osv:CVE-2021-4183",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-4183",
"aliases": [
"CVE-2021-4183"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/wireshark/wireshark",
"type": "GIT",
"events": [
{
"introduced": "3a34e44d02c9c91f9f851bd6f29ff4505131b127"
},
{
"last_affected": "3a34e44d02c9c91f9f851bd6f29ff4505131b127"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:wireshark:wireshark:3.6.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.6.0"
},
{
"last_affected": "3.6.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"3.6.0",
"wireshark-3.6.0",
"v3.6.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4183.json"
}
},
{
"ranges": [
{
"repo": "https://gitlab.com/wireshark/wireshark",
"type": "GIT",
"events": [
{
"introduced": "3a34e44d02c9c91f9f851bd6f29ff4505131b127"
},
{
"last_affected": "3a34e44d02c9c91f9f851bd6f29ff4505131b127"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:wireshark:wireshark:3.6.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.6.0"
},
{
"last_affected": "3.6.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"3.6.0",
"wireshark-3.6.0",
"v3.6.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4183.json"
}
}
],
"modified": "2026-10-24T10:50:25.833847076Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q6XGBKWSQFCVYUN4ZK3O3NJIFP3OAFVT/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R5AEK3XTOIOGCGUILUFISMGX54YJXWGJ/",
"https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4183.json",
"https://security.gentoo.org/glsa/202210-04",
"https://www.wireshark.org/security/wnpa-sec-2021-19.html",
"https://gitlab.com/wireshark/wireshark/-/issues/17755",
"https://www.oracle.com/security-alerts/cpuapr2022.html"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "34"
},
{
"last_affected": "34"
},
{
"introduced": "35"
},
{
"last_affected": "35"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:oracle:http_server:12.2.1.3.0:*:*:*:*:*:*:*",
"cpe:2.3:a:oracle:http_server:12.2.1.4.0:*:*:*:*:*:*:*"
],
"vendor_product": "oracle:http_server",
"extracted_events": [
{
"range": [
{
"introduced": "12.2.1.3.0"
},
{
"last_affected": "12.2.1.3.0"
},
{
"introduced": "12.2.1.4.0"
},
{
"last_affected": "12.2.1.4.0"
}
],
"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-2021-4183",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 442167,
"published_at": "2021-12-30T22:15:10.247+00:00"
}