CVE-2026-76889

Analyzed Analyzed - Analysis Complete

UMTS FP Protocol Dissector DoS in Wireshark

Publication date: 2026-08-19

Last updated on: 2026-08-31

Assigner: GitLab Inc.

Description

UMTS FP protocol dissector crash in 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 allows denial of service

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-19

Last Modified

2026-08-31

Generated

2026-09-09

AI Q&A

2026-08-20

EPSS Evaluated

2026-09-07

NVD

CVE-2026-76889

EUVD

EUVD-2026-63145

Affected Vendors & Products

Vendor	Product	Version / Range
wireshark	wireshark	From 4.6.0 (inc) to 4.6.8 (exc)
wireshark	wireshark	From 4.4.0 (inc) to 4.4.18 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

Executive Summary

This vulnerability involves a crash in the UMTS FP protocol dissector, which is part of network protocol analysis tools. The crash occurs in versions 4.6.0 to 4.6.7 and 4.4.0 to 4.4.18 of the affected software. It allows an attacker to cause a denial of service by triggering this crash.

Detection Guidance

This vulnerability affects the UMTS FP protocol dissector in specific Wireshark versions (4.6.0 to 4.6.7 and 4.4.0 to 4.4.18). To detect it, check your Wireshark version with 'wireshark --version'. If using a vulnerable version, update immediately. Monitor for crashes when processing UMTS FP protocol traffic.

Impact Analysis

The vulnerability can lead to a denial of service, meaning the affected software may stop responding or crash when processing specific network traffic. This could disrupt services relying on the UMTS FP protocol dissector for analysis or processing.

Compliance Impact

This vulnerability causes a denial of service via a protocol dissector crash, which may disrupt network services but does not directly impact data confidentiality or integrity. It is unlikely to directly affect compliance with GDPR or HIPAA unless service disruption leads to secondary issues like data unavailability.

Mitigation Strategies

Update Wireshark to a version outside the affected range (4.6.0 to 4.6.7 and 4.4.0 to 4.4.18) to resolve the UMTS FP protocol dissector crash issue.

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