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CVE-2021-4182
Crash in the RFC 7468 dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
High7.5EPSS 3.4%
- Published
- Updated
- Reserved
- Assigned by
- GitLab
Description
Crash in the RFC 7468 dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitLabCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Modified | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 3.4% · top 11% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- Loop with unreachable exit condition ('infinite loop') in Wireshark
- CWE-835 (opens in a new tab)All about CWE-835 and its CVEs
Affected products
Wireshark Foundation · Wireshark
- affected =3.6.0
- affected >=3.4.0, <3.4.10
References (8)
- https://www.wireshark.org/security/wnpa-sec-2021-20.html (opens in a new tab)x_transferred
- https://gitlab.com/wireshark/wireshark/-/issues/17801 (opens in a new tab)x_transferred
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4182.json (opens in a new tab)x_transferred
- FEDORA-2022-1daf93c51d (opens in a new tab)vendor-advisoryx_transferred
- FEDORA-2022-30411cb3c4 (opens in a new tab)vendor-advisoryx_transferred
- https://www.oracle.com/security-alerts/cpuapr2022.html (opens in a new tab)x_transferred
- GLSA-202210-04 (opens in a new tab)vendor-advisoryx_transferred
- https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-4182)Record last updated .