CVE-2021-4183
wireshark: pcapng file parser crash
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Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 29, 2021
Updated · November 22, 2025
Description
A heap-buffer-overflow vulnerability was found in Wireshark. This flaw allows an attacker with local network access to pass specially crafted capture files, causing an application to halt or crash.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-20 · Improper Input Validation