CVE-2021-4182

wireshark: RFC 7468 file parser infinite loop

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Severity

Moderate

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · December 29, 2021

Updated · November 21, 2025

Description

A parser infinite-loop flaw was found in wireshark. An attacker with local network access could pass specially crafted capture files causing an application to halt, crash, or infinite loop.

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 · 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-20 · Improper Input Validation