What’s Vulnerable › Vulnerabilities
CVE-2021-4186
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 2.3% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2021-12-30 · updated 2026-06-17
- Weakness: CWE-476
Description
Crash in the Gryphon dissector in Wireshark 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file
Affected products
- Fedoraproject Fedora: 34, 35
- Wireshark Foundation Wireshark: from 3.4.0 through 3.4.10
References
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4186.json
- https://gitlab.com/wireshark/wireshark/-/issues/17737
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2EY2VFBU3YGGWI5BW4XKT3F37MYGEQUD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3FH2J57GDA2WMBS6J56F6QQRA6BXQQFZ/
- 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://security.gentoo.org/glsa/202210-04
- https://www.wireshark.org/security/wnpa-sec-2021-16.html
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4186.json
- https://gitlab.com/wireshark/wireshark/-/issues/17737
- https://lists.debian.org/debian-lts-announce/2024/09/msg00049.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2EY2VFBU3YGGWI5BW4XKT3F37MYGEQUD/
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