CVE-2021-39923
wireshark: PNRP dissector large loop
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Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · November 17, 2021
Updated · November 22, 2025
Description
A flaw was found in Wireshark. A process failure consumes excessive CPU resources on crafted or malformed PNRP input and can cause a denial of service.
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 · 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-400 · Uncontrolled Resource Consumption