CVE-2020-26421
wireshark: USB HID dissector crash (wnpa-sec-2020-17)
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · December 9, 2020
Updated · November 22, 2025
Description
A heap buffer overflow was discovered in the USB HID dissector of Wireshark while decoding packets captured in a pcap file or coming from the network. A remote attacker may abuse this flaw by sending specially crafted packets that, when processed, would make Wireshark crash resulting in a denial of service. The highest threat from this vulnerability is to system availability.
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 · 5.9CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer