CVE-2026-6534
wireshark: Wireshark: Denial of Service via USB HID protocol dissector infinite loop
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · April 30, 2026
Updated · July 2, 2026
Description
A flaw was found in Wireshark. A remote attacker could exploit this vulnerability by crafting a malicious USB Human Interface Device (HID) protocol packet. This could lead to an infinite loop in the dissector, causing a denial of service (DoS) condition, making the application unresponsive.
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
To mitigate this issue, avoid opening untrusted capture files or analyzing network traffic from untrusted sources with Wireshark. If processing untrusted data is unavoidable, consider running Wireshark within a sandboxed environment to limit potential impact.
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-835 · Loop with Unreachable Exit Condition ('Infinite Loop')