CVE-2021-4186

HIGH 7.5CVE-2021-4186 · Published 30/12/2021 · updated 17/06/2026

In short

CVE-2021-4186 is a HIGH (CVSS 7.5) vulnerability affecting wireshark (wireshark).
Chance of exploitation in the next 30 days (EPSS): 2.3%, higher than 83.4% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
wireshark wireshark	`≥ 3.4.0, ≤ 3.4.10`	No fix yet

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

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