CVE-2026-96421: CWE-1325: Improperly Controlled Sequential Memory Allocation in Wireshark Foundation Wireshark
USB HID protocol dissector infinite loop and memory leak in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
AI Analysis
Technical Summary
This vulnerability (CVE-2026-96421) in Wireshark Foundation's Wireshark product is caused by improperly controlled sequential memory allocation (CWE-1325) in the USB HID protocol dissector. It affects versions >=4.4.0 <4.4.19 and >=4.6.0 <4.6.9. The flaw can cause an infinite loop and memory leak, resulting in denial of service conditions when processing crafted USB HID traffic.
Potential Impact
The impact is denial of service (availability) due to an infinite loop and memory leak in the USB HID protocol dissector. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or fix links are provided, users should monitor Wireshark Foundation advisories for updates. Until a fix is available, avoid processing untrusted USB HID traffic with affected versions.
CVE-2026-96421: CWE-1325: Improperly Controlled Sequential Memory Allocation in Wireshark Foundation Wireshark
Description
USB HID protocol dissector infinite loop and memory leak in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
CVSS v3.1
Score 5.5medium
Affected software
Wireshark Foundation
Wireshark
pkg:github/wireshark/wiresharkRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-96421) in Wireshark Foundation's Wireshark product is caused by improperly controlled sequential memory allocation (CWE-1325) in the USB HID protocol dissector. It affects versions >=4.4.0 <4.4.19 and >=4.6.0 <4.6.9. The flaw can cause an infinite loop and memory leak, resulting in denial of service conditions when processing crafted USB HID traffic.
Potential Impact
The impact is denial of service (availability) due to an infinite loop and memory leak in the USB HID protocol dissector. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits in the wild have been reported.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or fix links are provided, users should monitor Wireshark Foundation advisories for updates. Until a fix is available, avoid processing untrusted USB HID traffic with affected versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitLab
- Date Reserved
- 2026-09-23T05:41:50.662Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abb897ef7a7c54106284f36
Added to database: 09/29/2026, 09:48:46 UTC
Last enriched: 09/29/2026, 10:03:30 UTC
Last updated: 09/29/2026, 18:20:12 UTC
Views: 12
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