CVE-2026-6534 Details
Description
USB HID protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
A denial-of-service vulnerability has been identified in the USB HID protocol dissector of Wireshark. This issue is present in versions 4.6.0 through 4.6.4 and 4.4.0 through 4.4.14. The vulnerability arises from an attacker-controlled 'REPORT_COUNT' being used directly as a loop bound without proper validation. By sending a malicious HID report descriptor with 'REPORT_SIZE' set to zero and a large 'REPORT_COUNT', the dissector can be forced into an infinite loop. This loop consumes excessive CPU resources and memory, leading to a crash as the system runs out of available resources.
Users can upgrade to Wireshark versions 4.6.5 or 4.4.15, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 30, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://gitlab.com/wireshark/wireshark/-/work_items/21121 | CISA-ADP | ExploitIssue TrackingThird Party Advisory |
| https://gitlab.com/wireshark/wireshark/-/issues/21121 | [email protected] | ExploitIssue Tracking |
| https://www.wireshark.org/security/wnpa-sec-2026-27.html | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-835 | Loop with Unreachable Exit Condition ('Infinite Loop') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| wireshark wireshark | >= 4.4.0, <= 4.4.14 >= 4.6.0, <= 4.6.4 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 1, 2026 | Initial Analysis | [email protected] |
| Apr 30, 2026 | CVE Modified | CISA-ADP |
| Apr 30, 2026 | New CVE Received | [email protected] |