CVE-2026-95391
Received Received - Intake

ZigBee ZCL Protocol Dissector Crash Causes DoS

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: GitLab Inc.

Description
ZigBee ZCL protocol dissector crash in 4.6.0 to 4.6.8 allows denial of service

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Meta Information

Published
2026-09-29
Last Modified
2026-09-29
Generated
2026-09-29
AI Q&A
2026-09-29
EPSS Evaluated
N/A
NVD
CVE-2026-95391
EUVD
EUVD-2026-88685

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
wireshark wireshark From 4.6.0 (inc) to 4.6.8 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

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Executive Summary

This vulnerability is a crash in the ZigBee ZCL protocol dissector in Wireshark versions 4.6.0 to 4.6.8. It can be triggered by a malformed network packet or a corrupted packet trace file, causing Wireshark to crash. The issue is due to a use-after-free vulnerability in the ZigBee ZCL Touchlink protocol where memory is freed prematurely during dissection.

Detection Guidance

To detect this vulnerability, monitor for crashes in Wireshark when processing ZigBee ZCL protocol packets. Check if your Wireshark version is between 4.6.0 and 4.6.8. Use commands like 'wireshark -v' to verify the version. If crashes occur during packet capture or trace file analysis, it may indicate exploitation.

Impact Analysis

This vulnerability can cause Wireshark to crash, leading to denial of service. If you rely on Wireshark for network analysis or debugging, an unexpected crash could disrupt your workflow. No known exploits currently exist, but users are advised to upgrade to Wireshark 4.6.9 or later to avoid potential issues.

Compliance Impact

This vulnerability causes a denial of service via application crash, which may disrupt network monitoring and logging capabilities. This could impact compliance with standards requiring continuous data availability, such as GDPR (data processing integrity) or HIPAA (audit log integrity), if monitoring tools fail during critical operations.

Mitigation Strategies

Upgrade Wireshark to version 4.6.9 or later immediately. Avoid opening untrusted packet trace files in vulnerable versions. If upgrading is not possible, disable the ZigBee ZCL protocol dissector in Wireshark preferences to prevent crashes.

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