CVE-2026-95392
Received Received - Intake

MBIM Protocol Dissector DoS in Wireshark

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: GitLab Inc.

Description
MBIM protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 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-2026-95392
EUVD
EUVD-2026-88706

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
wireshark wireshark to 4.6.8 (inc)
wireshark wireshark to 4.4.18 (inc)
wireshark wireshark From 4.7.0 (inc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-126 The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

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Executive Summary

CVE-2026-95392 is a denial-of-service vulnerability in Wireshark's MBIM protocol dissector. It occurs when malformed packets are processed, causing Wireshark to crash. The issue stems from improper handling of crafted USB capture files with inconsistent data, leading to a segmentation fault during protocol analysis.

Detection Guidance

This vulnerability is specific to Wireshark's MBIM dissector and can be detected by analyzing network capture files for malformed MBIM packets. Use Wireshark's detailed protocol tree analysis mode to inspect USB or MBIM capture files for inconsistencies in GSM 7-bit encoded SMS messages or CDMA records. Commands like 'tshark -n -V -r capture.pcap' can help identify crashes during analysis.

Impact Analysis

This vulnerability could allow an attacker to crash Wireshark by tricking a user into opening a malicious packet trace file. It does not enable code execution, memory disclosure, or persistent system compromise. The impact is limited to temporary denial of service during analysis.

Compliance Impact

This vulnerability causes a denial-of-service condition by crashing Wireshark through malformed packet handling. It does not lead to data exposure, memory disclosure, or code execution, which are common compliance concerns under GDPR and HIPAA. The impact is limited to service disruption during packet analysis.

Mitigation Strategies

Upgrade Wireshark to versions 4.6.9, 4.4.19, or later to patch the vulnerability. Avoid opening untrusted capture files in detailed analysis mode until patched. Disable detailed protocol tree analysis for suspicious files if immediate upgrade is not possible.

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