CVE-2021-4181
HighPublic PoC
Published: 30 December 2021
Published
30 December 2021
Modified
03 November 2025
KEV Added
—
Patch
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CVSS Score v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.0019
40.5th percentile
Risk Priority
15
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-4181 is a high-severity Out-of-bounds Read (CWE-125) vulnerability in Wireshark Wireshark. Its CVSS base score is 7.5 (High).
Operationally, ranked at the 40.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-34041
Vulnerability details
Crash in the Sysdig Event 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
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
wireshark
wireshark
3.6.0 · 3.4.0 — 3.4.11
fedoraproject
fedora
34, 35
debian
debian linux
9.0
oracle
http server
12.2.1.3.0, 12.2.1.4.0
oracle
zfs storage appliance kit
8.8
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.